Dongles are currently usually stuck into an USB port, previously they were stuck into the serial or parallel port. copies of Nero Burning ROM Professional bundled with certain CD writers).
Another variant of this is that the software is tied down to a particular piece of hardware and will not run if the hardware is absent (e.g. Software that uses this method will only run if said dongle is present, and presents an error message followed by immediately quitting if the dongle is absent. Steel Beasts Pro PE and the DJMax Trilogy). "The Dongle": A variant of the "Key Disc" method mostly found on professional and enterprise level software, although it's starting to see use in consumer games as well (e.g."Key disc" method: The game prompts the user to insert their authentic installation or game disc, checking for some kind of identifying signature that they've carefully hidden in the disc format itself, in a way that would not (generally) be preserved when the player simply makes an electronic copy of the software code and files.This has been a concern for game makers even from the start, so throughout the years they've come up with a variety of ways to verify that whoever is playing their game has fronted the proper cash for that privilege.
When a player purchases a video game, how does the developer prevent them from simply making an illicit copy of the software and giving it away to a friend? Unlike physical merchandise (such as books), video games exist as electronic data, which is quite easy to make perfect copies of. Space Quest IV, telling you how to acquire the code once you've entered the Timepod (Disk Version Only)
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