Sigma Pad with backlight Signotec Use the signotec Sigma for a precise capture of the signature on a compact system with monochrome display - perfect for a paperless field service. The signotec Sigma with backlight doesn't mind reflections from lights or windows and is an exellent choice for potential low-light conditions. Special foil surface for a precise pen input. Optional backlight, perfect for changing or unfamiliar lighting conditions. Pad with special, resilient pen tip, 1.024 pressure levels, 500 Hz sampling rate. Highest security through unique security features and RSA encryption. Individual design possibilities with colors and logos.