Device, system, and method of three-dimensional spatial user authentication

摘要: Devices, systems, and methods of user authentication. A system includes a spatial challenge unit to distinguish between human non-human user. The requires the perform one or more operations that modify properties an electronic device operated by Correct performance required operations, indicates is human. also password unit, which tracks manner in handles while enters password; then utilizes this user-specific for authentication, checking whether his matches reference entry historical entry. sequence gestures, as pure purely-spatial user-authentication factor.