@fastfinge@interfree.ca@jonathan859 @dhamlinmusic @lynessence @JamminJerry @pixelate @quanin @mcourcel When I'm away, I give the catsitter an NFC card that will unlock the door. Then I can revoke it when I get back. Doesn't matter if they copied the NFC card, or forgot to give it back to me or whatever. That code doesn't work anymore. Whereas getting a locksmith to duplicate a key is easy and cheap.