People use their cell phones at wifi zone in Mexico City
People use their cell phones at a wifi zone in Mexico City, October 8, 2015. Government surveillance requests are gathering pace in Mexico, raising concerns about lack of oversight in a country plagued by corruption and collusion between security forces and criminal gangs. Last year, Mexican mobile operators fielded more than 55,000 requests from authorities for information on citizens' calls, messages, and location data, nearly 25 percent higher than in 2013, according to industry figures obtained by Reuters. Picture taken October 8, 2015. REUTERS/Edgard Garrido