Apple's new AirTag has been a hit with Apple fans keen to use it to keep track of their belongings. However, it is a little too thick to be comfortably fitted into the average wallet. Naturally, that hasn't stopped someone from deconstructing an AirTag and repurposing it to fit into a card that slides into a wallet much more easily.
https://www.notebookcheck.net/Modder-repurposes-an-Apple-AirTag-to-better-fit-a-wallet.537777.0.html