Dan Switzen, 44, hid a camera inside a tissue box in his home in Pleasantville, according to authorities.

On Nov. 13, his 18-year-old live-in nanny invited two of her friends, also 18, over to the house and one of them discovered the camera in the bathroom, sources said.

The horrified teens took the camera to Pleasantville police about 7:50 p.m. that night and cops found incriminating images on its memory card.