Patent ID: 8468394
Filing Date: 2013-06-18
Classification: G06F

Abstract:
1. A data processing apparatus, said data processing apparatus comprising: a plurality of devices, said plurality of devices comprising: trace circuitry and tagging circuitry, each of said trace circuitry and said tagging circuitry associated with at least one of said plurality of devices, said tagging circuitry configured to: monitored; and item as an item to be monitored; and said trace circuitry configured to: a plurality of trace sources each associated with a corresponding device, each of said plurality of trace sources operable to detect tagged items and to output trace information relating to at least some of said detected tagged items, wherein said tag data comprises security information of an associated item, said trace source being operable in response to said security information restricting output of trace information to impede output trace information relating to said tagged item and in response to said security information permitting output of said trace information to allow tracing of said trace information.