She sensed the presence of someone too close to her on the stairs. She turned and saw a man peering into his cellphone. A passer-by confirmed her suspicion: The man had taken photographs under her skirt.
“I said I had to do something,” the woman said on Thursday. “Since he is taking pictures of me, I am going to take pictures of him.”
She said she followed the man onto the southbound No. 1 train, walked through several cars and found him on a seat. She prepared her cellphone camera. He looked at her and mumbled something. “And I told him ‘smile’ because I am going to the police,” she said.
She took a picture, e-mailed it to the police and filed a report. On Tuesday, an officer at the 110th Street subway station at Central Park West approached a man matching the photograph, the police said. […]
On Sept. 9, the police started tapping into the ubiquitous technology by inviting people who witness crimes to take pictures with their cellphone cameras, if safety permits, and to send them along when they make 911 calls.