John Zeno Moore is an IT consultant in the Silicon Valley. Investigators found more than 300 child pornography videos and stills on his computer, including one of a 2-year-old.
They say Moore had rigged his home with hidden cameras. Police were first tipped off after a mother with two daughters subleased a room in the home and discovered the cameras.
Moore faces more than 180 years in prison when he is sentenced next month.