Sitting in his surgical gown inside a large medical suite in Reston, a Vienna man prepared for his colonoscopy by pressing record on his smartphone, to capture the instructions his doctor would give him after the procedure.

But as soon as he pressed play on his way home, he was shocked out of his anesthesia-induced stupor: He found that he had recorded the entire examination, and that the surgical team had mocked and insulted him as soon as he drifted off to sleep.