H
hacker

A technology enthusiast who does not have malicious intent. Many authors and the media often use the term when they are actually discussing issues relating to crackers.

Halon

A fire-suppressant material that converts to toxic gases at 900 degrees Fahrenheit and depletes the ozone layer of the atmosphere and is therefore usually replaced by an alternative material.

hand geometry

A type of biometric control that recognizes the physical dimensions of a hand. This includes width and length of the palm and fingers. It can be a mechanical or image-edge (in other words, visual silhouette) graphical solution.

handshaking

A three-way process utilized by the TCP/IP protocol stack to set up connections between two hosts.

hardware

An actual ...

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