3 ms·
> It's surprising that we didn't invent any kind of physical padlock that accepts two keys, with the lock mechanism such that, when locked with one of the two k
by throw0101c 17d ago
> It's surprising that we didn't invent any kind of physical padlock that accepts two keys, with the lock mechanism such that, when locked with one of the two keys, can only be unlocked by the other key.
They do:
* https://www.youtube.com/watch?v=VAriLDgpnY8 https://www.youtube.com/watch?v=VAriLDgpnY8
As mentioned in the video they're usually used in commercial settings. Also:
> One Way Cylinder Keying: Allows for the issuance of one key that can ONLY lock, one key that can ONLY unlock and one key that can BOTH lock and unlock the cylinder. Perfect for applications where one key holder should only have authorization to lock, while another should only have authorization to open and yet another can have the authorization to perform both functions. One way keyed products are supplied with 2 nylon head cut keys per product and 1 key order card per product.
* https://mangionelocksmiths.com/wp-content/uploads/2017/02/Mul-T-Lock-USA-complete-book-2016-email.pdf https://mangionelocksmiths.com/wp-content/uploads/2017/02/Mu...