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Signotec Sigma

The LCD Signature Pad ‘Sigma’, designed by signotec and proudly manufactured in Germany, redefines expectations with its exceptional performance and competitive pricing. Featuring a backlight facility for enhanced visibility, this signature pad’s compact dimensions of 160x120x10 mm make it effortlessly portable, ideal for users on the move. Its sleek design, coupled with the optional pen holder, adds a touch of professionalism whether in use or at rest. The ‘Sigma’ stands as a testament to innovation, offering businesses and professionals a reliable and stylish solution for capturing signatures with ease and efficiency.

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Signotec Sigma Description

The Signotec Sigma LCD Signature Pad is a user-friendly device designed for capturing electronic signatures. Its sleek design features a smooth signing surface, a high-resolution display (320 x 160 pixels), and a comfortable pen for a natural signing experience. The rounded edges and optional pen holder make it easy to grip and store.


Enhanced Usability with Backlight

The Sigma with Backlight offers improved visibility in various lighting conditions, making it ideal for mobile use. This feature ensures clear viewing of the signature during the signing process.


Advanced Security Measures

The Sigma prioritizes signature security. The special pen eliminates accidental touches from the screen, preventing unintended capture. Additionally, signotec develops all aspects of the device, including applications, firmware, electronics, and drivers. This integrated approach ensures seamless operation and robust data protection. The Sigma is built to prevent unauthorized access to biometric data stored within the signatures and during data transfer to a computer.


Natural Signing Experience

The Sigma’s pressure-sensitive surface and advanced sensors recreate a natural pen-on-paper feel. The sensors are calibrated to capture smooth signatures without reaching their limits, ensuring a comfortable user experience.


Versatile Functionality

Beyond capturing signatures, the high-resolution display allows for displaying text and graphics, making the Sigma suitable for various stationary applications. With its competitive pricing and user-friendly features, the Sigma LCD Signature Pad is a compelling alternative to other e-signature solutions.


  • Special foil surface for precise pen input
  • Batteryless pen with special spring-loaded refill
  • Acquisition of 1,024 pressure stages
  • Very high sensor resolution of 2.214 x 1.130 ppi
  • Transmission rate of the 4D signature data at 500 Hz
  • Only one USB cable for connection
  • Patented security for the conclusive signature of PDF documents
  • RSA encryption of the handwriting characteristics in the pad
  • Internal secure signature creation device
  • Optional protective bag for safe transport
  • Individual design options and OEM production (colours and logo printing)
  • Powerful software for secure PDF signatures optionally available

Technical Specifications of Signotec Sigma

Display 4″ (10,5 cm) b/w Display with or without backlight
Active Signing Area 100 x 50 mm
Dimensions 160 x 120 x 10 mm
Text-Display Unlimited fonts and sizes
Grafik-Display Any graphics up to 320 x 160 pixel
Navigation Unlimited screens, Hot-Spots (buttons) and Scroll-Function
Security AES-Encryption, RSA-signing. Signatures biometrics RSA-Encryption inside the pad.
Connection USB (HID, no driver installation required)
Terminalserver Yes. Optional with internal virtual USB-Serial-Converter (FTDI)
Internal Samplingrate 6000 Hertz
External Samplingrate 500 Hertz
Resolution 1040 dpi, not interpolated
Pen No special pen, cheap replacement
Sensor Scratch resistant surface
Warranty 2 Year

RSA-Security Features of Signotec Sigma

The signotec pads, equipped with the latest firmware versions (Omega 1.25 and Sigma 1.16), boast top-tier security mechanisms, ensuring the utmost integrity of the signature data. These robust security features enable the establishment of a comprehensive chain of evidence, crucial in the event of any disputes. Depending on the specific integration requirements, a variety of techniques are employed to enhance security and reliability, ensuring that signature data remains protected and tamper-proof throughout its lifecycle. Whether integrated into legal, financial, or other sensitive contexts, signotec pads provide unparalleled security, offering peace of mind to users and stakeholders alike.


  • PDF documents can be signed inside the pad and not in the insecure environment of the PC.
  • The biometrics from the signature can pad RSA-encrypted inside the pad and not in the insecure environment of the PC.
  • The pad LCD-screen content with the signature can be RSA-signed inside the pad.
  • Each pad has a separate and unique RSA certificate from delivery.
  • Saving from custom RSA-certificates inside the pad.
  • The pad can generate an RSA certificate inside.
  • Supported schemes are RSA PKCS # 1 v1.5 (with or without the hash OID), PKCS # 1 v2.1
  • Certificates can be certified by a Root Authority.
  • Supported hash algorithms are SHA-1, SHA-256 and SHA-512.


  • Trade and Industry
  • Banking and Exchange Houses
  • Insurance
  • Hospitals and Clinics
  • Public Authorities and Government Sectors

Used For

  • Contract Signing
  • Consent Signing
  • Customer Satisfaction Survey