The Silicon Power Blaze B10 is a USB 3.0 flash drive with built in software-based encryption. It also warms up with use and when it does, the color of the heat sensitive ink pattern on the side changes from blue to red!
This way you will know if the drive gets too hot to handle. The drive is rated for speeds of up to 70MB/s and the Blaze B10 comes with a lifetime warranty. No word on pricing or availability just yet though.