Most recently action was taken against an Android app called Hobbit 3D Wallpaper HD that let people use stills from the film as a background screen on their handset.
Gun-control advocates have helped highlight these flaws, but some also worry that focus on the system's holes will be used as an excuse to block legislation requiring universal use of the background check system.
As for universities varying the grades students need to get on courses depending on their background - and the use of what is called "contextual data" - some already do that, but the sector will resist any attempt to bring in an across-the-board rule on it.