And if you find it hard to believe that a high school student would be capable of designing and building his own vending machine, Hawkins has also created a detailed Instructables tutorial that explains how the locker was upgraded, and all the problems he had to solve during its construction.

The vending machine requires exact change, but it’s completely theft-proof, and even knows when someone is trying to cheat its coin slot. The most impressive part, however, is that Hawkins designed it to be installed without modifying or damaging the locker in any way, including a door that automatically swings shut after each use, and a clever way to route power and wiring without drilling any new holes.

[Instructables via Boing Boing]