Amazon's Palm Scanning Technology Could Be Used to Track Your Movements

If Amazon's just storing these numbers and hackers got access to it, they wouldn't be able to backtrack and figure out your scan. What they could do, however, potentially is find out every single time you used that technology. It would become a way of tracking your movements. And potentially also seeing what it was you were using the scanner for - like going to a sporting event or a concert. That's where you start to see real security and privacy issues.