One-time codes keypad

I’ve just installed my new Keypad Pro and I’m very satisfied. But besides missing the NFC feature, I think it would be useful to have a function for one-time codes. This would come in handy if someone else needs to open your door, but you don’t want them to have permanent access. So when someone needs to open my door they can use a one-time code wich doesn’t have a expiry date. I don’t have a bridge so I’m not able to make a pin when I’m away from home.