Inverting conditions in Locksmith
There are many instances in which it is useful for a key to grant access if the opposite of your key condition is true.
Locksmith makes it easy to invert keys. To do so, simply click the box next to "invert" when you're editing the key.
Notice that when this is done, the wording will update, inverting the key condition logic:
Make sure to "Save" the lock, and you're done!