[ryukoposting]

Currently at a reasonably-priced hotel in the boonies. Extended my stay the other day and they had to re-issue the keys. The keys must be aware of the reservation period, and the locks must be aware of the current wall-clock time. Finding a way to tamper with the RTC in the lock could blow up the whole system. Or, you know, a crowbar.

[foota]

I don't think a crowbar attack will work in this case, I doubt you'll be able to get the lock to talk. /s

[themerone]

I've extended stays without needing new keys. There could be wireless updates, or resetting the lock is done when housekeeping preps the room.

There are definitely multiple solutions that don't depend on a server to authenticate every unlock.

[ryukoposting]

I'd imagine the locks in most hotels don't require an internet connection. Frankly I'd be horrified if my hotel room's locks depended on this horrendous WiFi.