Shane McGlaun, reporting for SlashGear:It appears that artists of all sorts are getting very serious about keeping fans from using smartphones while they are at their concerts or events. The latest musician to ban cell phones at her events is Alicia Keys. Fans aren't forced to give up their smartphones at the door to be locked up in some locker or box until the show is over. Rather, fans are handed a special pouch that is locked up with their smartphone inside the fan keeps that pouch with them during the event, but they can't get to the device to call, take photos, or shoot video. If they need to use their device during the show the users can go back to the door and a worker passes a disc about the size of a bagel over the bag to unlock it and the fan can step outside to use their smartphone.