An item carried on a key ring either as decoration or security.
A passive wireless electronic device that usually uses RFID technology to control access to buildings, containers, computers, etc. by being placed near a detector.
An active wireless electronic device that controls access to buildings or vehicles, such as a remote control for a car door lock.
A magical object providing protection against ill will, or the supernatural, or conferring the wearer with a boon such as good luck, good health, or power(s).
To be worn as a talisman.