I was amused and intrigued to read about a Japanese drink-vending machine (see photo) that identifies your age and sex so it can make appropriate recommendations.
Here it is making a recommendation after it scanned the person standing in front of it:
I wonder if it guesses your age by your height.
Here it is making a recommendation after it scanned the person standing in front of it:
I wonder if it guesses your age by your height.