An estimated hundreds of thousands of rape kits sit untested in police departments nationwide, according to the Joyful Heart Foundation, a group that helps sexual assault victims. A Denver cardiologist has been charged with drugging and sexually assaulting a string of women he met on the dating apps Hinge and Tinder, court papers allege. Stephen Matthews, 35, was first arrested March 22 based on one victim's disturbing accusations. Widespread reports of the allegations prompted nine other women to come forward, officials said. On Monday, Matthews was arrested on the new charges outside the Denver District Courthouse after making an appearance on the initial case.

A Polish website called PimEyes uses facial recognition to search the internet for pictures of a person based on a single image. That photo can be taken from a news site, social media, or an uploaded selfie, and the computer algorithm then shows matches on the web. The free part of service shows photos it believes to be the same person, and rates the'match' out of five stars. It provides a generic name of the site where the picture is found (i.e. For that added insight, it offers a premium service for £9.79 a day where customers can see exactly where the photo comes from.