I spent a lot of my time at PDC meeting with different people in meetings that were covered by a Non-Disclosure Agreement (NDA). The various parties in the meeting kept reminding us how seriously they take the NDAs but there is always the chance that something will leak out. Now there might be a partial technology solution. It seems some researchers have found a way to block digital cameras. That might help with some problems but won't stop others like where someone (in this case a Microsoft employee) makes a public announcement about a "product" that I later learned under NDA was still being thought about and was not to be publicly discussed.

You can read the article on the digital camera/camcorder blocker at http://news.com.com/Crave+privacy+New+tech+knocks+out+digital+cameras/2100-7337_3-5869832.html?tag=nefd.lede