Not sure if this technology will be fool proof. I can imagine some hacks coming out such as holding up a picture up to the camera to fool it…

“The vending machine has an “adult recognition” button, and when this is pressed a tiny camera takes a photo of the customer and analyzes certain features such as wrinkles and sagging around the eyes and mouth as well as the frame of the potential buyer’s body to determine a general age.

In a test with 500 people ranging in age from their teens to their 60s, this software was able to identify adults with 90% accuracy.

Distinguishing teenagers from twenty-somethings is more difficult. So when the software cannot make a judgment call, the customer needs to insert a license to prove their age. If the machine can make a match with the license photo, it will sell cigarettes.”