(tidbits.com)
They didn’t actually work for the Department of Energy; they worked for a division of Bechtel, a large US defense contractor to the Department of Energy. They wanted to add some custom hardware to an iPod and record data from this custom hardware to the iPod’s disk in a way that couldn’t be easily detected. But it still had to look and work like a normal iPod.
building something like a stealth Geiger counter. Something that DOE agents could use without furtively hiding it. Something that looked innocuous, that played music, and functioned exactly like a normal iPod. You could walk around a city, casually listening to your tunes, while recording evidence of radioactivity—scanning for smuggled or stolen uranium, for instance, or evidence of a dirty bomb development program—with no chance that the press or public would get wind of what was happening. Like all other electronic gadgets, Geiger counters have gotten smaller and cheaper, and I was amused to run across the Radiation Alert Monitor 200, which looks an awful lot like a classic iPod.
Wow, I didn't know this was actually a real project. Go read this!
Some interesting stuff from former Apple engineer David Shayer on the company's 2005 plans to build a top secret iPod in collaboration with the US Department of Energy, likely to create a stealth Geiger counter.