Abstract: There is discussed a method of authorising an electronic transaction in which a user device receives a shared secret and a shared secret identifier. Subsequently, on receipt of transaction data from a transaction terminal, the user device calculates a one-way hash of data comprising the shared secret to generate a hash value, generates authentication data comprising the hash value and the shared secret identifier, and transmits the authentication data to the transaction terminal.

Abstract: A drone system has a camera mounted to a frame of a drone, the camera configured to acquire image data upon receipt of a signal from a flight controller and a precision location device configured for continuously obtaining location data. Additionally, the drone system has a computing device configured for receiving a signal indicating that an image has been acquired, the computing device configured for transmitting a signal to a precision location device indicating that an image has been acquired, and the precision location device is further configured to record event data associated with a time indicating when the image was acquired.

Abstract: A drone system has a camera mounted to a frame of a drone, the camera configured to acquire image data upon receipt of a signal from a flight controller and a precision location device configured for continuously obtaining location data. Additionally, the drone system has a computing device configured for receiving a signal indicating that an image has been acquired, the computing device configured for transmitting a signal to a precision location device indicating that an image has been acquired, and the precision location device is further configured to record event data associated with a time indicating when the image was acquired.