To disarm the security system, just present Tag to the reader on the keypad. This copy-protected key fob allows you to manage security modes without a password, user account and access to the Ajax app. To identify users quickly and securely, KeyPad Plus features the DESFire® technology. It is the best-in-class contactless solution to identify the user by card or key fob. DESFire® is based on the ISO 14443 international standard and combines comprehensive 128-bit encryption and copy protection. This technology is also used in transportation systems of European capitals and access systems at NASA. In the app, you can set the name and access permissions for each key fob. You always know who and when changed the security mode — every action is recorded in the event log. A system administrator can revoke or restrict Tag access permissions in real time. Tag and Pass are encrypted contactless access devices for managing the security modes of the Ajax security system. They have the same functions and differ only in their body: Tag is a key fob, and Pass is a card.