"I don't know about you, but I have quite a bit of data that I wouldn't want others to have direct access to. Items such as e-mail archives and financial records could potentially be disastrous in the hands of someone with malicious intent. Those who carry around vital data in external enclosures are even more at risk, as this data is "out and about" quite often and subject to loss or theft. If you fit into either of these categories, SilverStone recently released an external 2.5" hard drive enclosure that uses RFID (Radio Frequency Identification) technology to encrypt the contents of the drive inside, rendering it useless without the RFID sensor key to unlock it."