Smart cameras spot when hospital staff don't wash their hands

If you end up in a hospital in Europe, you have a one in 20 chance of acquiring an infection while there. One of the leading causes is a lack of hand hygiene. Even though hospitals are filled with alcohol-based gel dispensers and advisory posters, they're not working. The conclusion of a recent pilot study may just have found the solution. Using a combination of depth cameras and computer-vision algorithms, a research team has tracked people around two hospital wards and automatically identified when they used gel dispensers.