Amazon's drone delivery service, Prime Air, has been introduced in several US cities and users are reporting instances of instances where the company's drones accidentally drop their cargo onto the ground from 10 feet in the air. These incidents have been caught on camera by YouTuber Tamara Hancock, showing a drone dropping a plastic bottle of blue raspberry syrup onto her driveway. The issue is not clear how to mitigate this issue, with some suggesting that if drones constantly broadcasting an unencrypted record of their position and have no independent on-board methods to verify their position, it could be easy for hackers to hijack them by spoofing a GPS signal. The question of how drones can avoid flying into a wall is also controversial, with both sides advocating for different systems that maintain consistent broadcast of the drone’s altitude, heading and air speed, and the second advocating for the use of onboard “detection and avoid” systems like camera and radar.