A college is removing its vending machines after a student discovered they were using facial recognition technology

• The University of Waterloo is expected to remove smart vending machines from its campus.
• A student discovered an error code that suggested the machines used facial recognition technology. 
• Adaria Vending Services said the technology doesn't take or store customers' photos.

A university in Canada is expected to remove a series of vending machines from campus after a student discovered a sign they used facial recognition technology.