Excellent tester. It was very helpful. I was surprised to see that my device was on when I tried to use it. So I did an experiment: I explicitly turned off the device and then put it in a case. Then I crushed the body with my fingers. .When opening, the device was of course switched on. It's possible the manufacturer will update the software to require a long press or triple press to turn on. This will solve this problem. In the meantime, I need to find a metal box to store this.