Hardware locking devices or "dongles" are hardware units that connect to your computer and communicate with software running on the computer in such a way that the software does not work fully or not at all without the attached hardware locking device.
Hardware locking devices usually incorporate some kind of algorithmic encryption into their embedded microelectronic circuit. in some hardware lock models, these encryption algorithms can be very advanced.
A dongle protection software (commonly known as a dongle or key) is an online content protection and protection device that, when connected to a computer or other electronic device, unlocks software functionality or decodes content. The hardware key is programmed with a product key or other cryptographic protection mechanism. is connected via an electrical connection to an external bus of the computer or device.