At one time I lived in an apartment building just outside of Seattle that had public retail space in the lobby. To allow residents and their visitors in after hours, a fancy touch screen was installed where you could enter an apartment number and it would phone the apartment where someone could then punch a number and unlock the door. Standard stuff.

Except that the touch screen could be activated by rain. In Seattle.

There was a small cowl over the apparatus to keep regular rain off, but if there was any wind at all, it was very easy for drops to be blown onto the screen and it would start phoning apartments in the middle of the night.

Amazingly, this was among the building's least troublesome faults.