Topaz T-LBK755SE-BBSB-R SignatureGem LCD 4x3 SE Serial/Virtual SerialManufacturers Datasheet download The SignatureGem Backlit LCD 4x3 models integrate all the high quality biometric and forensic capture techniques of a SignatureGem devices, with the added feature of a bright backlit LCD interactive display. The SignatureGem LCD 4x3 models allows users to see "electronic ink" under the pen tip as they sign as well as navigate and display text and graphics. LCD pads will show the signature on the signature pad, as well