The Keymaster
Master
Broomstick through the larger square holes in the track works well against outside intruders, it wouldn't take me long to open any door from the inside no matter how you locked it, but that's because I know a thing or two about doors, garage doors, and locks. A masterlock is no more than a minor inconvenience after learning and practicing how to pick a Medeco Biaxial
Keep in mind that the Biaxial technology was replaced in 2006 with the M3 technology. Best of luck picking or bumping that one. I am always skeptical of claims of picking or bumping high security pin tumbler lock cylinders. Several people in my industry have claimed to have done it, but not one of them has been able to to pick or bump a Biaxial or Primus cylinder that I have keyed while I was watching them. Perhaps the pressure was too much for them.
If your up for a challenge PM me, and we will get together some time. I will pin up a Biaxial cylinder and you can show me how you pick it open. You don't have your location listed, but I would be willing to drive a significant distance to learn something.