A friend of mine works at a medical facility where the supplies are kept in a locked cabinet to which several people have keys.
My parents used to leave a gate key under a turtle shell on their porch, so their yard-maintenance contractor could access the backyard.
These are just a couple of the scenarios in which padlocks are commonly used, but every conventional padlock suffers from the same shortcomings: Access is granted to whomever holds the key or the combination, and it’s almost impossible to know who’s gained…
Keyless padlocks reviewed: Dog & Bone LockSmart Bluetooth vs. Master Lock Bluetooth Smart 4400
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