keytag
nounUK /ˈkiː.tæɡ/
US /ˈkiː.tæɡ/
A small tag you put on a key so you can find it easily.
She wrote her name on the keytag so her keys wouldn't get lost.
OTHER MEANINGS
2. A small electronic device attached to a keyring that gives access to a building or service.
He tapped his keytag on the reader to open the gym door.
3. A plastic or metal card shaped like a tag used for loyalty points or membership.
The cashier scanned my keytag to add points to my account.
4. A tag worn on a keyring that helps return lost keys to their owner.
The hotel keytag had the room number and the hotel's address on it.