@Daniel8584
I think it would be a good idea if all guests were required to have ID on the record but as far as I know this is not a requirement at present.
Third-party bookings are supposed to be forbidden but there is a loophole that is infrequently exploited.
There was a recent post that described a situation where someone booked, showed up with a homeless person, and left immediately.
This is clearly unacceptable but a host cannot force the booking party to actually stay there so I would definitely be in favor of requiring all guests to reveal their identities before any bookings are accepted.