It looks like the threat of a massive fine and potential prison time was enough to convince more than 45,000 American drone owners to register with the FAA after just two days of opening the mandatory registration, not to mention the fact that it’s free for the first thirty days. If the FAA’s numbers are correct, that would mean that more than 10% of the drone owners in the United States have already registered, while the other 90% have until February 19th to register or else risk facing the aforementioned penalties. The number of drone owners in the United States is expected to nearly double over the holidays, and people who acquire a drone from this point forward will need to register before their first flight.