[lotsofpulp]

> What's up with that?

It was programmed incorrectly and expired before it should have.

The stay was extended but the key was not updated with the new departure date.

A new key was erroneously issued for the room, someone used the new key to go into the room, saw someone was already staying in the room, and had to get keys for a different room. This would cause all old keys to stop working since every time a lock sees a new key used, it assumes a new hotel guest is staying.

Or it lost its data for whatever reason.

[hunter2_]

My brain was ANDing the first three paragraphs until I got to the OR in the last paragraph, wondering why in the world those otherwise discrete scenarios would have a combinatorial effect. I'm wired to look ahead to determine AND versus OR with a comma-delimited series, but not with a paragraph-delimited series. It's a cool pattern but very unexpected, and I'm not sure you could successfully tack on other thoughts before or after the series, because what would delimit those from the series without overloading the meaning of a paragraph separation?

Given a need for multi-sentence items within a series, I go for bullet points. Hyphen character to start each point if no rich UL formatting is available.

[hypercube33]

there you go. make a fake coil card and tell the door you're staying for 25 years and a new guest ...get in and own the room

[Moru]

Until the next guest arrives, card saying they are staying until next monday and clear all previous keys.