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Dongle
What's a dongle? -- a quick tutorial would be appreciated. -- Norm
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by: 1cellPosted on 2000-01-12 at 14:59:52ID: 2347469
dongle /dong'gl/ /n./ 1. A security or copy protection device for commercial microcomputer programs consisting of a serialized
EPROM and some drivers in a D-25 connector shell, which must be connected to an I/O port of the computer while the program is run. Programs that use a dongle query the port at startup and at programmed intervals thereafter, and terminate if it does not respond with the dongle's programmed validation code. Thus, users can make as many copies of the program as they want but must pay for each dongle. The idea was clever, but it was initially a failure, as users disliked tying up a serial port this way. Almost all dongles on the market today (1993) will pass data through the port and monitor for magic codes (and combinations of status lines) with minimal if any interference with devices further down the line -- this innovation was necessary to allow daisy-chained dongles for multiple pieces of
software. The devices are still not widely used, as the industry has moved away from copy-protection schemes in general. 2. By
extension, any physical electronic key or transferable ID required for a program to function. Common variations on this theme have used parallel or even joystick ports. See dongle-disk.
[Note: in early 1992, advertising copy from Rainbow Technologies (a manufacturer of dongles) included a claim that the word derived from "Don Gall", allegedly the inventor of the device. The company's receptionist will cheerfully tell you that the story is a myth invented for the ad copy. Nevertheless, I expect it to haunt my life as a lexicographer for at least the next ten years. :-( --ESR]