Can I open safes relying only on audio cues? GABBY LLANILLO April 22, 2021 19:14 Yes, while cycling through the numbers on the lock when the correct number is selected you will hear a slightly different tick sound then all the other numbers. It's subtle so listen closely and you'll be cracking safes in no time. Related articles How do I avoid having to use touch pad swipes? How much space is required for initial install? What can help me avoid/detect trip wires without seeing them? Comments 0 comments Article is closed for comments.