If data safety is your ultimate concern, you might want to take a look at Kingston's latest DataTraveler Blackbox thumbdrive. According to Kingston, the BlackBox is FIPS certified ( Federal Information Processing Standard ), which means it meets strict United States federal requirements for data protection. The BlackBox features a 256bit hardware based AES encryption which automatically encrypts and decrypts data on the fly. The drive automatically locks down after ten consecutive failed password attempts, thus helping to prevent unauthorised access if it gets into the wrong hands. TheBlackBox thumbdrive is available in 2GB, 4GB and 8GB capacities.
Source : Kingston