Archive for June, 2005

The ThinkPad Airbag Protection System (APS)

Tuesday, June 28th, 2005

Given the level of interest generated by the PowerBook motion sensor experiments ([1], [2]), this should be of interest to many: Mark Smith has published a document titled The ThinkPad APS Accelerometer Interface, which discusses the workings of the “Airbag” motion sensor in ThinkPad notebooks. This should be of particular use to those who are [...]

A Tour of the Mac OS X Kernel

Wednesday, June 22nd, 2005

A Tour of the Mac OS X Kernel is a flash conversion — and a minor edit — of a recent talk I gave at the NSA. Although I think the conversion is fine, since it allows the presentation to be “driven” within a web browser, it is far from being a visually faithful conversion. [...]


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