The Federal Aviation Administration (FAA) now requires every drone owner to register each drone that is purchased weighing over .55lbs. If not you and your drone will be in big trouble. Registration free until Febuary 19 2016. Failure to register your drone by that time will result in some potentially ridiculous fines, and even prison time. This only applies to people who already own a drone, and anyone who purchases a drone after December 21st will be required to register it before its first flight.