Toshiba's 2.5-inch MKxx61GSYG might sound like your average number/letter hard drive, but it's actually not that generic. The drive can self-encrypt and auto-erase itself, under special conditions.
According to Toshiba, the MKxx61GSYG hard drive will self-encrypt and auto-erase its contents when it's plugged into another computer. It does so by using "government-grade AES-256 hardware encryption." This means that if someone steals your computer and tries to sell off its parts, the drive, when plugged into a new PC will kick in Toshiba's Wipe Technology and erase the data.
You'll feel a lot safer knowing that your data won't be accessed. The hard drives will be available at the end of June and coming in 250, 320 and 640GB capacities, with enterprises getting them first. Pricing has yet to be announced.