Who's Been Sleeping in My Bed?

There's a small amount of water leaking into my shop at the intersection of a wall and the concrete floor. The wall at that location is part concrete -- below ground -- and wood, with a window opening.

To help identify the source of the leak, I bought an infra-red camera attachment that piggy-backs onto my iPhone. It's a very clever design -- you can read about it here. 

One of the many suggested uses of this device listed in the instruction manual is "Find out if the dog, or your husband has been laying (sic) on the sofa." (Don't wives ever do that?) I took this photo of our bed about half an hour after my afternoon nap. Guilty as charged!