We'd never have guessed that vending machines were ripe for innovation, but apparently there are plenty of high-tech ways to get your snacks. We saw a 65-inch transparent display handling the task last week, and now Kraft and Intel are showing off a vending machine in Chicago that screens your age before dispensing Jell-O Temptations samples. The machine uses a special camera and Intel-designed software to determine your age, and if it spots a child it refuses to hand out the tasty treat. Sure, it's little more than a marketing stunt, and we're curious to know how the machine actually works (what's the age cutoff? And what would it do with Justin Bieber and Zac Efron?), but it's a pretty cool trick, and if it works, age-recognition could actually have some interesting (and more practical) implications.