Software vendors often use hardware dongles to protect their applications from piracy. When the application runs, it checks for the presence of a specific physical USB key. If the key is missing, the software typically disables features or refuses to run.

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: Version 18.1.1 is widely distributed for use with SolidCAM to emulate its required licensing key.

is a universal driver designed to emulate USB security dongles (such as those made by SafeNet Sentinel, HASP, Wibu, and Eutron). It is widely used in the field of software reverse engineering to bypass hardware-based licensing restrictions.