This is becoming an epidemic of sorts!
It's just a modern varaition of the old "Bait and Switch!" Basically, there are a ton of companies that offer "free" encryption software for computers, laptops, USB drives, etc. When you waste your time downloading them, you simply find it is indeed free, but a demo or "time trial" of the REAL software.
We need to complain to these companies, and tell them we are sick of being "takin' in" by these border-line scams!
As for the answer. You can get FREE encryption software with secure USB drives (It's built into the drive it's self). That's what I use.
Larry Talbot, April 2007