The steps in this article require using the web interface of a 2N device. Please follow this manual in case this is your first time using the web interface.

Compatibility Mode allows 2N devices to change the way they compare RFID card IDs with the database of users. When enabled, it compares only the last 4 bytes of the card ID instead of the full ID. Some older RFID card types, such as EM Marine, may not work properly without Compatibility Mode. Enabling this feature ensures compatibility with these cards.

You can configure Compatibility mode individually on each device in Services > Access Control > Advanced or through Access Commander (version 3.3 and later).

How to configure Compatibility Mode in Access Commander version 3.3 and later

1. Navigate to Settings > Credentials
2. Click on the blue pen icon near 'Compatibility Mode setting'
   
   
   
   
3. Select one of the three options:
   Disable on all devices: Disable Compatibility Mode on all connected devices.
   Enable on all devices: Enable Compatibility Mode on all connected devices.
   Keep device settings: Retain existing Compatibility Mode settings on each device (default setting after updating to Access Commander  version 3.3)
   
   
4. Click 'Save'
   
   
   
   

How to configure Compatibility Mode in device configuration

1. Navigate to Services > Access Control > Advanced
2. Tick the checkbox next to 'Compatibility Mode'
3. Click 'Save'