Two important issues: 1. There is nothing illegal about pornography in general. It doesn't matter whether he had two or two million pix of naked women. Their discovery is as irrelevant as wedding photos. 2. Nowadays there are so many ways to carry files around - SD chips, CDs/DVDs, on your iPod, on an encrypted HD partition, not to mention just downloading them later - that this sort of search is largely pointless. Any serious importer of child pornography wouldn't even be inconvenienced by them. This is not to downplay the legitimacy of the child porn issue - but measures like this waste time and effort that could have been used elsewhere. In Bruce Schneier's phrase, security theater.