I can’t find it now, but i’m pretty sure there exists smart home light switches that are powered by you pressing it.

IIRC they run Zigbee to communicate with the smart home and had a bit more resistance when pressing (= more energy).

Not OP but, consider using something like a YubiKey or similar hardware key for your second factor authentication.

They usually support multiple protocols so you only need to carry one around - and storing your second factor with your passwords is like putting all your eggs in one basket.

Print out recovery codes or get an ekstra hardware key for backup and you get great security for surprisingly little effort.