(1) (Society for Information Display, Santa Ana, CA) A membership organization founded in 1962 devoted to the information display industry. With chapters around the world, SID hosts conferences in the U.S. and abroad and publishes a monthly magazine. By 2004, the society was 6000 members strong.
(2) (
Security
ID) In Windows, a unique name assigned to each user and to each workgroup. See
access token.
(3) (
System
ID) A unique number assigned to a wireless system. See
NID.