EV Charger Access Control: A Safer Choice for Shared Parking

Installing an EV charger in the garage or car park of an apartment building involves more than choosing the right location or charging power. There is another, less visible decision that can have a major impact on everyday use: who should be allowed to start a charging session?

When a wallbox is used by one person inside a private, locked garage, access control may not seem particularly important. The situation changes when the charger is installed in a shared residential car park, can be reached by other residents or is intended to serve several drivers.

In these settings, an EV charger access control system can prevent unauthorised use, connect each session to a specific user and keep the charging infrastructure easier to manage over time.

The three most common options are RFID authentication, access through a smartphone app and open charging, where no user identification is required.

There is no single solution that works for every property. The right choice depends on the number of users, whether the charger is private or shared, how often users change and how much visibility the building manager or charger owner needs.

Here is how the different access methods work and which residential charging scenarios they suit best.

Why EV charger access control matters in shared residential parking

Access control is often considered primarily a way to prevent misuse. In practice, it has a much broader role.

A properly configured authentication system can show who started a charging session, when it began and which charging point was used. In a shared installation, this information simplifies day-to-day management and helps reduce misunderstandings between residents.

Preventing unauthorised charging in shared spaces

A charger installed in a communal car park may be physically accessible to many people, including:

• apartment owners;

• tenants;

• family members;

• visitors;

• maintenance staff;

• drivers assigned to neighbouring parking spaces.

Leaving a charger permanently available means that anyone who can reach it and connect a compatible vehicle may be able to use the electricity.

The risk is relatively low when the wallbox is installed inside a locked private garage. It becomes more relevant when the device is mounted in an open parking area, on a shared wall or next to a circulation route used by other residents.

Authentication keeps the charger unavailable until it recognises an approved user credential.

Identifying who is using a shared EV charger

For a shared charging point, knowing that a session took place is not always enough. The system may also need to determine who started it.

When every driver has an individual RFID card or personal account, the charging platform can associate each session with a specific user. This makes it easier to review activity and separate the charging history of different residents.

Individual identification becomes particularly useful when several people use the same charger or when the property has multiple charging points.

Linking every charging session to the correct user

Access control creates a connection between the credential used and the session that follows.

Depending on the charger and management platform, the recorded information may include:

• user ID;

• date and starting time;

• session duration;

• charging point used;

• energy delivered;

• final session status.

These records help keep the infrastructure organised and can be made available to the individual driver, charger owner, property manager or authorised operator.

Managing owners, tenants and guests more easily

The users of a residential car park do not necessarily remain the same over time. An apartment may be sold, a tenant may move out or a resident may need to give a guest temporary access to the charger.

A digital access management system makes these changes easier to handle. A new credential can be added, an old one revoked or temporary authorisation created without modifying the electrical installation.

Garage entry and charging authorisation are not the same thing

A common assumption is that a car park protected by a gate or access-controlled entrance does not need additional protection at the charger.

In reality, building access and charging access perform two different functions.

Why a secure car park entrance may not protect a private wallbox

The entrance system determines who can enter the building or parking area. It does not establish who is allowed to use each individual charger.

A resident may have every right to enter the car park while having no permission to use another resident’s private wallbox. Similarly, a visitor may be admitted by a resident without being authorised to charge from the building’s shared infrastructure.

Charger authentication therefore adds a second layer of control specifically for EV charging.

Who may be able to reach a charger in a shared parking area?

A residential car park may be accessed by:

• parking-space owners;

• tenants;

• partners and family members;

• visitors;

• cleaners;

• maintenance teams;

• installers;

• delivery personnel and contractors.

Not all of these people should necessarily be able to start a session. Physical access to the parking area should not automatically be treated as permission to use the charging equipment.

When dedicated charger authentication is useful

A dedicated authentication method is particularly useful when:

• the wallbox can be reached by other residents;

• the charging point is shared;

• electricity use must be attributed to different users;

• temporary access needs to be granted;

• several chargers are managed through one platform;

• the authorised drivers may change over time.

It may be less important when the charger is inside a locked private garage, used only by its owner and connected directly to that household’s electricity supply.

Open charging: when an EV charger can operate without authentication

Open charging is the simplest access model. The driver connects the vehicle and the session can begin without presenting an RFID card or signing in through an app.

This creates a very straightforward user experience, but it works best when the surrounding environment is already sufficiently secure.

How automatic charging starts

When a wallbox is configured for open access, it detects that a vehicle has been connected and begins communicating with it. Provided the necessary safety and charging conditions are met, the session can start automatically.

The identity of the person connecting the car is not verified. From the charger’s point of view, any compatible vehicle may therefore be able to start charging.

Advantages of an open-access wallbox

The main benefit is simplicity.

There is no card to remember, no application to open and no account to log into. The driver simply connects the vehicle and allows the charger to begin the session.

Open access also reduces administrative work because no user credentials need to be distributed or maintained.

It can be suitable for:

• one regular driver;

• a single household;

• a locked private garage;

• a charger that cannot be reached by third parties;

• a setting where sessions do not need to be separated by user.

Risks of a charger with no user authentication

Simplicity naturally comes with a trade-off.

If other people can reach the wallbox, they may be able to connect their vehicle. Even where deliberate misuse is unlikely, mistakes, misunderstandings or unplanned use may still occur.

Without a personal credential, it is also difficult to link a session confidently to a particular resident. This limitation becomes especially significant when the charger or electricity supply is shared.

When open charging may be sufficient

Open charging can be a reasonable choice when the wallbox is installed inside a locked private garage or an area that only the charger owner can access.

It may also work well when one household is the only user and the electricity is supplied directly through that household’s meter or electricity account.

In other words, open access is most appropriate when physical security already provides enough protection and individual users do not need to be identified separately.

RFID access control: how it works

RFID is one of the most widely used methods for authorising EV charging. The system uses a card, badge or small key fob containing an electronic identifier.

By holding the credential close to the reader, the driver can be recognised and authorised by the charging point.

How an RFID card authorises a charging session

Each card has its own identifier. When the user presents it to the charger, the system checks whether that identifier appears on the list of approved credentials.

If the credential is valid, charging can begin. If it is not recognised, the charger remains unavailable.

The authorisation check may be performed locally through a list stored in the device or remotely through a charging management platform.

Assigning an RFID badge to a resident

For the system to remain useful, each RFID credential should be assigned to a clearly identified user.

This can normally be done through an app, online portal or configuration interface. It is helpful to use a consistent naming method, such as the driver’s name, apartment number, parking-space number or an internal user code.

Good organisation at the beginning prevents confusion as the number of cards increases.

Starting and stopping a session with a personal credential

The usual process is straightforward:

1. the driver connects the vehicle;

2. the RFID card is presented to the reader;

3. the charger checks the authorisation;

4. the charging session begins;

5. the same credential may be used to end the session.

The process is quick and does not require a smartphone. This is one of the main reasons RFID works well in settings with many regular users.

Recording sessions from different users

When a session starts through an RFID card, the charging data can be linked to the card’s identifier.

The session history can therefore show which credential was used, when the session occurred and how long it lasted.

However, the system recognises the credential rather than the person physically holding it. For this reason, cards should not be shared casually between unrelated users.

Organising RFID users in an apartment building

The technology itself is simple, but its effectiveness depends on how credentials are managed.

Giving one shared card to an entire building would remove most of the benefits of user identification. Separate credentials are usually the better approach.

One personal card for each user

A personal credential makes it possible to associate sessions with one driver.

In a household with two drivers, separate cards may be useful even when both people charge the same car. Whether this level of detail is necessary depends on how the property wants to group and review charging activity.

The important point is that the person responsible for the system should always know who received each credential.

Multiple badges for the same apartment or vehicle

A charging platform may allow several credentials to be connected to the same household, apartment or billing profile.

This provides convenience without losing the ability to see which badge was used.

For example, two members of the same family can have individual cards while their charging activity is grouped under the same apartment or account.

Temporary credentials for guests, tenants and authorised personnel

In some circumstances, access may only be needed for a limited period.

A tenant, regular visitor or technician can receive a dedicated card that is disabled when it is no longer required.

Temporary authorisation is preferable to lending a resident’s personal card because it keeps the charging history clearer and makes access easier to revoke.

Revoking and replacing a lost RFID card

Losing a badge should not require the entire charging system to be reconfigured.

The missing credential can be identified, deactivated and replaced with a new card assigned to the same user.

Prompt revocation is important because anyone who finds the original card may otherwise be able to attempt to use it.

Advantages and limitations of RFID EV chargers

RFID provides a practical balance between control and ease of use. However, it is not without limitations.

Fast access without a smartphone

Its most obvious advantage is speed.

The driver does not need to search for the charger in an app, enter login details or wait for a page to load. The badge is simply held near the reader until authorisation is confirmed.

This is particularly convenient for users who charge regularly.

Easy to use in shared residential car parks

A physical card is intuitive and can be used by people who are not particularly comfortable with apps.

In a residential building where drivers have different levels of digital confidence, this simplicity can make everyday use much smoother.

Straightforward management of authorised users

Credentials can be added or removed individually. There is no need to change access for every other user when one resident moves away or loses a card.

The system remains structured and easy to update.

Risks linked to borrowed, lost or shared badges

A card can be lent to another person. In that situation, the charging platform will continue to attribute the session to the card holder, even though somebody else may have used it.

Cards may also be lost or damaged.

Simple rules can reduce these risks: personal credentials should not be shared, lost badges should be reported immediately and temporary users should receive separate access.

Controlling an EV charger through an app

A smartphone app provides a more digital experience and often includes a broader set of features.

In addition to authorising charging, an app may allow users to monitor an active session, review energy use and adjust selected settings.

Authorising charging from a smartphone

The driver signs in with a personal account, selects the charging point and sends the start command.

Depending on the system, the charger may already be linked to the account or may be identified through a list, location code or QR code.

Once the user’s permission has been verified, the session can begin.

Adding or removing a user remotely

A property manager or authorised charger administrator can invite a new user, assign the appropriate permissions and remove access when it is no longer needed.

Remote user management is useful in larger residential developments or buildings where tenants change frequently.

No physical card needs to be handed over. Access can be activated directly on the user’s account.

Viewing sessions, energy use and charger status

An app may show:

• the current charging session;

• energy delivered;

• session duration;

• previous charging activity;

• notifications;

• charger status;

• warnings or faults.

This gives the driver more information than RFID authentication alone.

Granting temporary access without distributing cards

Digital access can be created for a defined period and revoked remotely.

This can be useful for guests, short-term tenants or people who only need to use the charger occasionally.

There is no physical badge to collect at the end of the access period. The account or permission can simply be disabled.

Advantages and limitations of app-based access

An app can make access management more flexible, but it also increases reliance on digital services.

Remote management of user permissions

The administrator can take action without being physically present in the car park.

A new driver can be added, another removed and the status of the charging infrastructure checked remotely.

This becomes particularly valuable when there are several chargers or when the person managing them does not live on site.

Personal monitoring of charging sessions

Each driver may be able to view their own activity from a smartphone.

This improves transparency and makes it easier to review energy use over a selected period.

Dependence on a smartphone, account and connectivity

The driver needs a compatible phone, valid login credentials and, depending on the system, a working data connection.

A flat battery, locked account or connectivity problem may make starting a session less convenient.

Before selecting an app-only solution, it is therefore worth understanding what happens if the digital service is temporarily unavailable.

Challenges for occasional or less digitally confident users

Not everyone is comfortable using an application for a routine task.

Registration, passwords, updates and notifications may feel unnecessary to someone who simply wants to connect a car and charge it.

For this reason, app-only access is not always the most inclusive option in a shared residential environment.

RFID or app: which access method is better?

The choice depends on the experience expected by users and the level of management required.

Everyday ease of use

For frequent charging, RFID is generally the quickest option. A card can be presented to the reader in seconds.

An app usually requires a few more steps, but it can provide additional information and remote control.

Identifying individual users

Both methods can associate a session with a specific user, provided each person has an individual credential.

RFID identifies the card, while the app identifies the account.

Managing temporary users

An app can make it easier to create temporary access without distributing a physical item.

RFID can also be used for visitors, but someone must issue and later collect the badge.

Revoking access

Both accounts and RFID cards can normally be disabled individually.

App-based management may make the process more immediate, while RFID requires the administrator to identify the correct card or badge record.

Supporting multiple regular users

In an installation with many regular drivers, RFID reduces the steps needed to start each session.

An app provides more management tools and may be more convenient when authorised users change frequently.

Remote control and monitoring

The app has a clear advantage in this area.

It may display charger status and allow selected operations to be performed remotely. RFID on its own remains primarily a local authentication method.

Combining RFID and app access

RFID and app access do not have to be treated as competing options.

In many shared installations, the most effective solution is to use both and give each one a different role.

RFID for fast everyday charging

The card can support the routine action: arrive, connect the vehicle and authenticate.

The experience remains quick and does not depend on the user having a smartphone available.

App access for session monitoring

The driver can use the app when they want to review charging history, check an active session or manage personal account details.

The app does not necessarily need to be opened every time the car is connected.

A management portal for property managers and operators

A central portal may bring together:

• users;

• RFID cards;

• digital accounts;

• charging points;

• sessions;

• energy consumption;

• access permissions.

This separates system administration from the everyday charging experience.

Greater continuity when one access method is unavailable

Having two authentication methods improves flexibility.

If the app cannot be used, the driver may still be able to present the RFID card. If the card has been forgotten, app-based access may provide an alternative.

The exact options will depend on the charger, software and access configuration.

Managing different EV charger user profiles

Not every user needs the same permissions. A well-organised system can assign access according to each person’s role.

Residents with permanent access

Residents who regularly use the charging infrastructure can be given permanent credentials.

Their access remains active for as long as they retain the right to use the charger.

Tenants with time-limited access

For tenants, authorisation can be linked to the duration of the tenancy.

When the tenancy ends, the RFID card or account can be deactivated so that unused credentials do not remain active.

Guests with temporary credentials

Visitors can receive access for a limited period.

This is more secure than lending them a resident’s personal card and makes their sessions easier to distinguish.

Installers and technicians with dedicated permissions

A maintenance technician may need access to technical functions without requiring the same administrative permissions as the property manager.

A dedicated profile allows access to be limited to the tasks that need to be completed.

Administrators with user-management permissions

The person responsible for the infrastructure should be able to add and remove users, review active credentials and access the information needed to manage the charging system.

That does not necessarily mean they need unrestricted access to all personal information. Permissions should be proportionate to the responsibilities involved.

Assigning charging sessions to individual users

Personal identification is the starting point for transparent management.

Information to associate with each session

A charging record should normally include at least:

• user identifier;

• credential used;

• charging point;

• start time;

• end time;

• energy delivered.

These details make it possible to separate sessions and review previous activity.

Separating the energy use of different residents

When each resident uses an individual account or badge, the platform can group sessions by user, household, apartment or parking space.

This avoids having to estimate individual use on the basis of parking duration or other approximate information.

Managing sessions started with shared credentials

When several people use the same RFID card, all sessions will be linked to that credential.

This may be acceptable within a household that wants a single combined record. It becomes problematic if one card is shared across unrelated apartments or users.

A common building-wide card should therefore generally be avoided.

Why each user should have a personal identifier

Individual credentials improve:

• clarity;

• accountability;

• traceability;

• access revocation;

• consumption management;

• control over charger use.

The small amount of initial administration is usually worthwhile compared with the confusion that shared credentials may create.

Private or shared charger: how access requirements change

The most suitable system depends on how the charger is used and where it is located.

Private wallbox inside a locked garage

Open charging may be sufficient when the charger is in a space that nobody else can access.

RFID or app control may still be useful for monitoring sessions, preventing accidental use or disabling the charger when the owner is away.

Personal wallbox in an accessible communal area

When a privately owned wallbox is installed in a shared car park, authentication is generally advisable.

Even if the electricity is billed directly to the owner, access control can prevent other residents from using the device.

Charging point used by several residents

Individual identification becomes essential when multiple people share one charger.

Each resident should have their own credential, while the authorised manager should be able to review sessions and update the list of users.

Multiple charging points and multiple users

Centralised management becomes increasingly important as the number of chargers grows.

One platform can allow authorised drivers to use different points while keeping individual sessions separate.

Recommended configurations for common residential charging scenarios

Practical examples can help translate the general principles into a clearer choice.

One owner and a wallbox connected to a personal electricity supply

When the wallbox is inside a locked private garage, open charging is usually the simplest solution.

If the charger is visible or accessible to other people, RFID or app authentication may be worth adding.

A private charger accessible to other residents

In this case, RFID can provide a good balance of protection and ease of use.

An app may be added for session monitoring or for households with several authorised drivers.

One charging point shared by a small group of residents

A hybrid arrangement is often the most practical.

Each resident uses a personal RFID credential, while the administrator reviews users and sessions through a management portal. The app can provide additional information to individual drivers.

Multiple chargers managed through one access system

A residential car park with several charging points benefits from a central platform.

Credentials may be authorised across the entire infrastructure or restricted to a particular charger, parking area or user group.

Occasional use by guests or visitors

A temporary account or dedicated RFID card can work well for occasional access.

The permission should have a defined duration and be revocable without affecting permanent users.

Managing new users, property changes and deactivated credentials

Access management does not end after the initial setup. The system needs to remain accurate over time.

Adding a new user

When a new driver is authorised, the usual process should include:

1. creating the user profile;

2. assigning the credential;

3. setting the appropriate permissions;

4. checking that access works;

5. providing clear instructions.

A short test at the beginning can prevent frustration when the person first needs to charge.

Revoking access when someone leaves

When a tenant or resident leaves the property, old credentials should be disabled.

Recovering the physical card may not be enough, as an account, duplicated credential or linked device could still remain active.

Updating access after a sale or new tenancy

A change in occupancy should be reflected in the charging platform.

Previous sessions should remain linked to the former user, while the new owner or tenant receives a separate credential and profile.

Reviewing the list of authorised users

A periodic review can identify:

• unused accounts;

• badges that were not returned;

• former residents;

• expired temporary users;

• duplicate profiles.

This is particularly useful in larger developments with many drivers.

Rules for using shared residential EV chargers

Technology works best when it is supported by straightforward and understandable rules.

Who may request an RFID card or app account?

The building or charging operator should establish who is eligible for access and who may approve requests.

The process should be consistent so that residents are treated fairly.

Personal credentials should not be shared

An individual RFID card should not normally be lent to another resident.

Otherwise, the charging history will no longer reflect the actual user and may become unreliable.

What to do if a badge is lost or a smartphone is unavailable

The procedure should explain:

• who to contact;

• how the old card will be disabled;

• how to request a replacement;

• whether an alternative access method is available;

• how quickly access can be restored.

A defined process prevents improvised solutions.

Managing temporary access

Guest credentials should have a named sponsor or responsible resident, a clear duration and a defined scope.

At the end of the period, access should be revoked or explicitly renewed.

Responsibility for unauthorised use

The rules should state that users are responsible for keeping their credentials secure and for reporting a lost badge or compromised account promptly.

This helps maintain transparency and accountability across the building.

Common mistakes in EV charger access control

Even a capable access system can become ineffective if it is configured poorly.

Giving every resident the same RFID card

A shared card may start the charger, but it cannot distinguish between users.

It appears convenient at first but becomes a problem precisely when accurate records are needed.

Confusing car park access with charger authorisation

Having a gate remote or building access credential does not automatically grant permission to use every wallbox in the parking area.

The two access levels should remain separate.

Choosing app-only access without considering the users

An exclusively digital solution may be inconvenient for some residents.

Before making a decision, it is important to consider the habits and digital confidence of the people who will actually use the chargers, not only the features offered by the software.

Failing to plan for credential revocation

Accounts and RFID cards should not remain active indefinitely.

When a person leaves the property or no longer has the right to charge, their access should be removed.

Leaving former tenants or owners active

This issue can easily go unnoticed when the user list is not reviewed.

Regular checks help prevent access from remaining available to people who no longer need it.

Failing to define who manages the users

If too many people can modify credentials and permissions, errors and duplicates become more likely.

The building should appoint one or more responsible administrators and limit management permissions accordingly.

Checklist for choosing an EV charger with access control

Before selecting the system, it is useful to verify several practical features.

Support for individual RFID credentials

The charger should allow separate cards to be registered and associated with specific users.

User management through an app or portal

A central platform simplifies user creation, revocation and regular reviews.

Immediate activation and deactivation

The system should make it possible to disable a lost card or unauthorised account quickly.

Sessions linked to individual users

Check that the charging history clearly distinguishes the activity of different drivers.

Temporary access

This is useful for guests, tenants, contractors and occasional users.

Central management of multiple chargers

An installation designed to expand should be able to manage several charging points from the same platform.

RFID and app support within the same system

Combining the two options provides more flexibility and accommodates different user preferences.

RFID, app or open charging: which option should you choose?

There is no universally superior technology. The right option depends on the charging environment.

Open charging for a genuinely private wallbox

This is the simplest solution when the charger is installed in a locked garage, used by one household and inaccessible to other people.

RFID for quick and straightforward access

RFID is particularly effective in shared car parks with regular users.

It identifies sessions without requiring drivers to use a smartphone every time they charge.

App access for flexible user management

An app is useful when remote control, session visibility and frequent changes to access permissions are required.

It also makes it easier to grant temporary access without issuing a physical badge.

A hybrid system for shared and expanding installations

A combination of RFID, app and management portal is often the most complete approach.

The RFID badge keeps everyday charging simple. The app gives drivers visibility and control. The portal allows authorised administrators to manage users, credentials and charging points.

Each tool can therefore be used for the task it performs best.

Frequently asked questions about EV charger access control

How can I stop other residents from using my private wallbox?

The charger can be configured to start only after authentication through RFID or an authorised app account. Simply connecting a vehicle will then be insufficient to begin charging.

Can the same RFID card be used on several charging points?

It depends on the system. With centralised management, one credential may be authorised on multiple chargers or restricted to a particular point.

Can several users be linked to the same wallbox?

Yes. One wallbox can usually support multiple users, each with an individual RFID card or account.

What happens if an RFID badge is lost?

The lost credential should be disabled as soon as possible. A replacement badge can then be registered and linked to the same user.

Can a guest be given temporary access?

Yes. This may be done with a time-limited account or a dedicated RFID credential. Lending the resident’s personal card is generally less transparent.

Can an administrator disable a user remotely?

When a management portal is available, an authorised administrator can usually revoke an account or RFID credential without accessing the charger physically.

Does a private charger always need RFID or app authentication?

No. Open charging may be sufficient in a locked, genuinely private garage. Authentication becomes more valuable when other people can reach the wallbox.

Is RFID or app access better?

RFID is generally faster for everyday use, while an app offers more monitoring and management features. In a shared car park, supporting both methods is often the most flexible option.

Can open charging be replaced with access control later?

This depends on the charger hardware and software. Before purchasing, it is worth confirming whether the access mode can be changed and whether additional users or credentials can be added later.

Conclusion

EV charger access control is not a minor detail in shared residential charging. It determines who can use the infrastructure, how sessions are identified and how easily the system can adapt as residents and vehicles change.

Open charging remains suitable for genuinely private settings. RFID offers a quick and accessible user experience, while app-based access supports more dynamic and remote management.

When a car park is shared or expected to serve a growing number of electric vehicles, a hybrid configuration can provide a strong combination of convenience, control and flexibility.

The best choice is therefore not based only on the available technology. It should reflect the people who will use the chargers, the way the property is managed and how the charging infrastructure is expected to evolve.