The purpose of internal door guards (also known as hinge guards, anti-finger trap) is to reduce the number of finger trapping accidents in internal doors, as internal doors pose a risk to children especially when closing.
Internal door guards protect fingers in door hinges by covering the gap that is created by opening doors by covering the hinges of internal doors with a piece of rubber or plastic that wraps from the door frame to the internal door. There are also door safety products which eject the fingers from the push side of the internal door as it is being closed.
There are various levels of internal doors protection. Front door protection a front anti-finger trapping device but leaves the rear hinge pin side of the door unprotected. Full internal door protection uses front and rear anti-finger trapping devices and ensures the hinge side of an internal door is fully protected. The level of protection should be determined by an assessment of risk of the internal door.