A borrowed ring is locked on a 4 digit combination brass lock and, the dials are mixed. Spectator can test that the lock cannot be opened. Spectator thinks of their birthday . This proves to be the secret numbers that opens the lock! No force of any pre-conditioned numbers such as someone’s year of birth, anniversary or birthday. Mechanical, nothing will break Nothing added or taken away No electronics parts, no remote control No magnets, no PK rings No threads, no wires No buttons, no switches No gravity switch, no directional limit No timers Spectators set the chosen numbers on the lock. They open it themselves!