Tablet, USB to MicroUSB adapter, iButton Bridge Connector, iButton reader
1. Connect the iButton cable
Connect the iButton reader, bridge, and adapter together
Connect the Micro USB end to the tablet
2. Return the key
Tap Return Key
Insert the key you want to return into the reader
The key will no longer work on the iButton locks it could previously unlock, but any CO-200s or CT-5000s will need to be reprogrammed.
Additionally, the key can now be programmed again for another user, as a resident key or a staff key.