What is a keyguard?
A keyguard is a device that fits over a standard computer keyboard for users with various mobility impairments that would make keyboard use otherwise inaccessible. Specifically, it allows the user to hit only one key at a time. The device is usually made of plastic or metal, with hole centered over the individual keys. The user can rest his/her hand on the keyguard and press a finger or pointer device, through the desired hole without making errant keystrokes on adjacent keys. These devices are custom made to match a particular keyboard make/model.
