My health club recently changed their lockers so I bought the recommended combination padlock. I soon realised that my eyesight is not good enough to see the tiny numbers in the combination without my glasses, which are in the locker. Didn't really want to have to look after a physical key during gym/swim so a bit stuck, what to do?
A kindly friend bought me a fingerprint padlock. This works surprisingly well 99 times out of 10, and on the occasion it really doesn't feel like recognising your finger then as a backup method you can open it via bluetooth from your phone. Showed it to office colleagues and everyone impressed.
Turned out in practice to be a disaster as wet wrinkly fingers in a steamy environment don't open fingerprint locks ever. And the bluetooth phone for the backup method is... in the locker. Wearing a key on a string round my neck now.