Following in the footsteps of stage magic, you can escape from even the most devious devices. Chains, handcuffs, ropes, all of it is no trouble. You can disarm primitive traps, hold your breath a long time, and pick devious locks. Sometimes tools may be required for your delicate work. In general, this skill represents your ability to bypass a constricting environment.
In a modern or future setting, you may need related technology skills to bypass access to electronic security.