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Appendix 3 The Inquiry Access Codes
The General- and Device-Specific Inquiry Access Codes (DIACs)
The Inquiry Access Code is the first level of filtering when finding Bluetooth devices and
services. The main purpose of defining multiple IACs is to limit the number of responses
that are received when scanning devices within range.
0 0x9E8B33 General/Unlimited Inquiry Access Code (GIAC)
1 0x9E8B00 Limited Dedicated Inquiry Access Code (LIAC)
2 0x9E8B01 0x9E8B32 RESERVED FOR FUTURE USE
3 0x9E8B34 0x9E8B3F RESERVED FOR FUTURE USE
The Limited Inquiry Access Code (LIAC) is only intended to be used for limited time periods
in scenarios where both sides have been explicitly caused to enter this state, usually by user
action. For further explanation of the use of the LIAC, please refer to the Generic Access
profile.
In contrast it is allowed to be continuously scanning for the General Inquiry Access Code
(GIAC) and respond whenever inquired.