MVK has a new line of hard drive enclosures for the security folk, called the “impact Encrypted HDD Enclosure” line. Available in 40 bit and 128 bit encryption models, each enclosure includes three “security keys” necessary to access the data on the hard drive that is enclosed. I’ll also guess and say that they require some sort of special formatting, because otherwise it seems like someone could just steal the entire assembly and remove the hard drive.
MKV external hard drive case with encryption [PC Watch]