The Bluetooth special interest group SIG is a group of companies working together to promote and define the Bluetooth specification. The following group of core promoters founded the Bluetooth SIG in February 1998
· Ericcson Mobile Communication
· Intel Corp.
· IBM Corp.
· Toshiba Corp.
· Nokia Mobile Phones.
Soon joined by
· Microsoft
· Lu cent
· 3Com
· Motorola
In May 1998, the core promoters publicly announced the global SIG and invited other companies to join the SIG as Bluetooth adopters in return for a commitment to support the Bluetooth specifications. the core promoters published version 1.0b of the Bluetooth specifications in July 1999.Now the number of companies Members in the SIG are over 2000 member.