In this Wednesday, May 10, 2017 photo, Ben Lieberman sits for a portrait at his home in Chappaqua, N.Y. After his 19-year-old son, Evan, was killed in a car crash in which the driver of the vehicle he was riding in was texting behind the wheel, Liberman has been working on a proposal that would allow police at accident scenes in New York to immediately examine drivers' cellphones with a device to determine if they'd been tapping, swiping or clicking. (AP Photo/Julie Jacobson)
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