If you have a flash drive that isn’t encrypted, the Hiddn Crypto USB Adapter is an easy way to encrypt flash drives, external drives, and other USB-connected storage media. The device offers secure and easy to use protection for all your externally stored data.
It does this using two-factor authentication in the form of a smartcard storing all encryption keys and a PIN-code. The Hiddn Crypto USB Adapter uses FIPS 140-2 Level 3 and Common Criteria EAL4+ certified Hiddn Crypto Module. Nothing on pricing or availability yet though.