Quoting IT: Data encryption is not enough
"Disk encryption, which encrypts every bit of data on a hard drive, is a good additional level of defense. However, unless biometric or smart-card authentication is used on the device, it is simply one more password for a hacker or thief to crack."
- Greg Crowe, "After theft, NASA orders laptops encrypted, but is that enough?", GCN.com, November 16, 2012