4 ms·
Another way would be to make the the lock a large rotating latch that was connected mechanically to a similar latch on the other side. While this would be more
by arikrak 8y ago
Another way would be to make the the lock a large rotating latch that was connected mechanically to a similar latch on the other side.
While this would be more complex, it wouldn't get in the way as much.
- krallja 8y agoAnother possible solution: Each side has two locks: one that is locked when the key is missing, and one that is locked when the key is present. To give yourself privacy, you must also lock yourself in. To exit the room, you must first unlock the other door and use the key to unlock your own door.
- TylerE 8y agoThat would violate fire codes almost everywhere.
- pzh 8y agoIt’s also asymmetrical. The occupant of the locked-when-key-is-present room would have no incentive to return the key and to unlock the opposite room door.
- deleted 8y ago[deleted]
- krallja 8y agoIt’s not really assymetrical: both sides have one key and two locks. But you’re right that it won’t work.
- krallja 8y agoNope, ignore me. This protocol has a fatal vulnerability: either user can just remove the other side’s key, and put it on the windowsill.