New York Citys's MTA Issues Warning About Playing Pokemon Go On Subway Platforms [Getty Images]

NEW YORK, NY - JULY 20: A safety message is displayed on a screen in the 14th Street subway station, July 20, 2016 in New York City. The Metropolitan Transportation Authority (MTA) has placed digital signage in subway stations encouraging riders to be safe while playing the Pokemon Go app on their smartphones. (Photo by Drew Angerer/Getty Images)

Getty Images News Drew Angerer