And every night, late at night, I turned the lock of his door and opened it C oh,so gently! And then, when I had made an opening big enough for my head, I put in a dark lantern, all closed that no light shone out, and then I stuck in my head.
VOA: special.2009.05.16
Users can practice this with, for instance, leaving the house without checking the doorlock multiple times, over a given time period.
Although the team is pursuing more on the doorlock thanks to interest generated by the prototype, the actual goal is for other uses of interest to phones.