If you've lost your keycard or your phone (and you don't have a passcode on your phone to stop anyone logging into your stolen phone), take the following steps to delete access;
1. Log into the Digital Keys Management Software (at digitalkeys.io)
2. Choose the Digital Key(s) of your name/user name from the Digital Keys table, and click the delete button. If there are multiple rooms, make sure to delete all digital keys.
3. The Digital Key/keycard will instantly be deleted from the system, and the card or phone will no longer work.
4. Ask your Digital Keys Account Administrator for a new keycard, or to generate a new digital key for app unlocking.