Topaz Signature Lite 1x5 T-S460-B-R Serial Connector. SigLite is Topaz's low-cost pressure-sensitive electronic signature pad. SigLite features all the high-quality biometric and forensic capture techniques of a SignatureGem tablet but with a low-cost touchpad and stylus in place of the active electromagnetic pen and sensor. The touchpad sensor is protected by an optional replaceable overlay for longer life.