Topaz SignatureGem 1×5 is a small electronic signature capture pad with a large signing area Designed for accuracy reliability and portability the SignatureGem 1×5 features a pen with interchangeable inking and plastic tips small size and weight and is powered only by your computers data port Unlike pressure-sensitive touchpad systems the digitizing pen allows the sensor to be mounted inside a hard plastic casing for ruggedness and long life With the rugged signing surface these models show the signature on the computer screen