Soap dish

It was his last demo in the company. He asked for a word, and then I heard him say, "I was thinking about what parting gift to give you, and I thought I'd solve the problem of who has the key."

I snapped. I had no idea how this could be left to a robot; the problem seemed unique. Here's the dilemma: if I arrive at the office before 8:30, I can assume I'm first, so I'll stop at the zero from the underground garage to pick up the key from the front desk. Sometimes, however, I am overtaken, and in this case, the stop is unnecessary, which means that I lose at least two minutes for every wrong guess. More of us in this situation, which multiplies that number, not to mention the mild annoyance that accompanies the unnecessary detour. So the question is how to find out where the key is in the underground car park.

While I was searching for the solution, our man reached into his back pocket and pulled out a white, magnetized plastic sheet resembling a soap dish, and in one motion, he stuck the company key on it. The red light turned green, indicating that it sensed the change. The gadget could read the ID on the key and transmit this change to our company chat room. Voila!

You have to know how to say goodbye. Thank you, Suhi, for the past two years!