System and method for obscuring hand-held device data traffic information
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United States of America Patent
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Jun 2, 2009
Grant Date -
Feb 15, 2007
app pub date -
Aug 11, 2005
filing date -
Aug 11, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Increasing security for a hand-held data processing device with communication functionality where such a device includes an access-ordered memory cache relating to communications carried out by the device. The hand-held data processing device has a locked state that is entered by the device receiving or initiating a trigger. On occurrence of the trigger to enter the locked state the memory cache is reordered so as to disrupt the access-ordering of the cache to obscure device traffic information and thus increase the security of the device in the locked state.
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