![Kingsley Guard-a-Key Black Realtor's Lockbox Portable Resettable Hanging Key Safe Combination Lock Box for House Keys, Realtors, Vacation Rentals, Black (1 Pack) - Amazon.com Kingsley Guard-a-Key Black Realtor's Lockbox Portable Resettable Hanging Key Safe Combination Lock Box for House Keys, Realtors, Vacation Rentals, Black (1 Pack) - Amazon.com](https://m.media-amazon.com/images/I/811Ll+VmskL.jpg)
Kingsley Guard-a-Key Black Realtor's Lockbox Portable Resettable Hanging Key Safe Combination Lock Box for House Keys, Realtors, Vacation Rentals, Black (1 Pack) - Amazon.com
![A key that can open many locks is called a master key, but a lock that can be opened by any key is worthless' A key that can open many locks is called a master key, but a lock that can be opened by any key is worthless'](https://cdn-webimages.wimages.net/051ad77e556a60371104c95448685f318f6e5d.jpg?v=3)
A key that can open many locks is called a master key, but a lock that can be opened by any key is worthless'
![First post in this sub. He used the whole "a key that can open any lock is a master key, a lock that opens for any key is a shitty lock" metaphor First post in this sub. He used the whole "a key that can open any lock is a master key, a lock that opens for any key is a shitty lock" metaphor](https://preview.redd.it/first-post-in-this-sub-he-used-the-whole-a-key-that-can-v0-6vthlcb15pra1.jpg?width=640&crop=smart&auto=webp&s=a2ae48a2438780e5af499ac4ffb3bcc9fb4d45e0)
First post in this sub. He used the whole "a key that can open any lock is a master key, a lock that opens for any key is a shitty lock" metaphor
![A key that can open any lock is a master key but a lock that can be opened with any key is worthless A key that can open any lock is a master key but a lock that can be opened with any key is worthless](https://cdn-webimages.wimages.net/050e5c51f30c8e216334c4a18a8806a2c60322-retina-thumbnail-large.jpg?v=3)