From an article discussing a new Minority Report style iris scanners
Do they really think Americans will go for it? Yeah, I guess they probably will. Like they said, their main marketing angle is convenience, and if there's one thing Americans like more than freedom, it's convenience.
Sadly, he is correct. This type of technology, while awfully convenient, is fraught with 100% chance of abuse. And many, many people will simply bow down to their masters' feet and beg to not be abused so long as they can purchase their energy drink without ever stopping by a register.
Hat Tip Mad Rocket Scientist