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A college is removing its vending machines after a student discovered they were using facial recognition technology
(www.businessinsider.com)
This is a most excellent place for technology news and articles.
Of note, it'd be pretty easy to push an OTA software update to have it go from recognizing a face to recognizing your face
then of course linking your card/phone to your face. maybe you can get a text message reminding you that you ate one this time last week and "youre not yourself when you're hungry"