Police said Jose Gil, 39, was on the Jamaica bound train at about 7:30 a.m. Thursday, somewhere between 71st-Continental Station and Briarwood, when he was spotted with a complicated up-skirt recording system.
A 16-year-old girl noticed Gil had a video camera propped up inside of an open sports bag that was positioned to videotape under her skirt, police said.
The teen alerted an uniformed NYPD officer on the train and Gil was picked up immediately.
Gil, of Lefferts Blvd. in South Ozone Park, was charged with unlawful surveillance and acting in a manner to injure a child.