Toshiba announced a new hardware based design for an Encrypted USB Flash Drive.  While it is very expensive compared to regular USB Flash drives, it offers an improved layer of safety for mailing, travel, or other business needs.

http://www.eweek.com/blogs/storage-station/toshiba-releases-new-key-size-encrypted-usb-flash-drive.html

http://www.toshiba.com/us/flash-drives

The Irvine, Calif.-based company on Feb. 3 unveiled its Toshiba Encrypted USB Flash Drive, a key-size device of up to 32GB in capacity that utilizes a hardware-based encryption process to deliver military-grade AES 256-bit encryption. The new drive uses a built-in mini-keyboard to authenticate access, incorporating a rechargeable battery so the user can enter a secure code before plugging into a USB port. Pricing ranges from $95 MSRP for the 4GB model, to $112 for the 8GB model, to $140 for the 16GB edition and $200 for the 32GB model.

Notable Features include:

Users simply enter their secure PIN and plug the drive into any USB 2.0 port on a compatible device.

Once access is granted, the drive unlocks the media, permitting clearance to all of the content stored on the drive.

When the drive is removed from a USB port, the drive automatically re-locks and encrypts the stored media.

— It is equipped with a brute force hack defense mechanism that will render all stored information irrecoverable after 10 consecutive unsuccessful attempts to enter the secure PIN, Toshiba said.