http://whispersys.com/whispercore.html http://whispersys.com/whispercore.html implements full-disk encryption for android. unfortunately it requires unlocking

http://whispersys.com/whispercore.html http://whispersys.com/whispercore.html implements full-disk encryption for android. unfortunately it requires unlocking the boot loader and installing that company's android rom, so it's not an option for many users.