The issue with safes and locks in general is the failure state.
Electronic locks can fail open or fail closed. Mechanical locks can only fail closed.
Double the locks on your safe is double the vulnerabilities to attack.
Master key systems are expensive to implement and add a huge vulnerability to locks. Lose a master key and a whole product line is potentially compromised.
If I am going to buy a safe, I want it to come with the promise that I am the only one who can open it. If I lose my key, it is going to require a specialist or a grinder.
The issue with safes and locks in general is the failure state.
Electronic locks can fail open or fail closed. Mechanical locks can only fail closed.
Double the locks on your safe is double the vulnerabilities to attack.
Master key systems are expensive to implement and add a huge vulnerability to locks. Lose a master key and a whole product line is potentially compromised.
If I am going to buy a safe, I want it to come with the promise that I am the only one who can open it. If I lose my key, it is going to require a specialist or a grinder.