Coming in 160, 320, and 500 GB sizes, the Lacie external hard drive protects your document in three ways. The first is a fingerprint scanner that supports up to five users. The second is a firmware lock that tethers the drive to the enclosure, so if you remove the drive it becomes unusable. The third is a chain lock port to tie the enclosure physically to your desk or some other solid object.
The drives are available now for $149.99, $229.99 and $299.99. They all support USB 2.0, but not Firewire, but still work both PC and Mac.