US Patent 11967193 Multi-factor safe lock

A multi-factor safe locking system for use in firearm storage, wherein the factors comprise a user's provided key, a user's biometric data, and a user's provided code. In some embodiments, the multi-factor safe locking system requires the near-simultaneous entry of two users, or dual consent of the two users to enter at least two unique keys, at least one form of biometric data from each user, and at least two unique codes, wherein each user supplies their own unique code to access the safe's contents. In further embodiments, a safe locking system includes a further factor of a result from a blood alcohol test.