Sigma with Backlight FTDI

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Display: 10,5 cm (4″) Mono-LCD, optional with LED backlight
Active Signing Area: 91 x 45 mm
Dimensions (W x D x H) : 160 x 120 x 10 mm
Connection: USB (approx. 2,0 meters cable length)


The Signature Pad Sigma with Backlight is a very attractive device with a catchy resolution of display. The attractiveness of the device is even enhanced by the flat design along with the smoothness of the surface area, a flush sensor, technical properties relevant for digitization of the signatures and even the gorgeous display of text and graphics on the display screen. The rounded corners and the edges of the “signature devices“. also help in gripping the gadget properly. The backlight technology even adds more glamour to the gadget, making it an extraordinarily alluring possession.

The Signature Pad With Backlight is developed with highly developed special sensors. The robust surface along with the special sensors helps the gadget to capture the signatures precisely, and even securely store them for a longer period, may be, even for several years. The screen resolution of 320 x160 pixels offers extraordinary display of both textual matters as well as special effects of graphics.

Sigma’s e-signature pads even possess two programmable lamps that inform about the status of the highly advanced device to the user. The user, or any one, can input their signature into the device with the help of the special pen-like device (that comes with the gadget itself). This process helps in eliminating any malfunctioning of the electronic signature capture device that could arise in case the user touches the screen or the surface of the pad, accidentally, while trying to sign with the help of the hand, other than by using the special pen.

The manufacturing technology has also added to the advantage of the product of the Digital signature pad. Since the applications, firmware, electronics and even the drivers are developed by the company of signotec it has really helped the device to jell firmly with the software and the hardware in an ideal fashion. The device is even highly protected and is impossible for anyone to track the biometric features related to the signatures stored in it. This even has resulted in high protection of data transfer from the signature pad to any personal computer, or vice-versa.

To add to all the significant technological advantages and the superior protection provided by the Digital signature solution, the nature of signature capture by the device is even made natural and secured. The advanced sensors of the device of LCD Signature Pad Sigma with Backlight, helps to comfortably sweep the signatures, without letting the users to reach the sensory limits of the gadget, inadvertently.

Display of extensive textual and graphical information also plays a major part when the device is in a stationary mode. The electronic digital signature software of the product even makes the signature pad an alternative stationary application that is even less expensive than its counterparts.

The Sigma signature pad is available with or without backlight. The device with backlight is particularly suitable if you have to work under changing or unknown light conditions, e.g. in field service.

The Sigma signature pad can optionally be supplied with an FTDI chip. This chip converts the USB signal into a virtual COM signal, so that the device can be used in virtual environments, such as Remote Desktop (RDP) or Citrix.

The mode can not be changed from USB to vCOM or vice versa.

For operation, the free FTDI driver is required. You can find it in the download area of our website.

Type 10,5 cm (4″) Mono-LCD, optional with LED backlight
Colours Monochrome
Resolution 320 x 160 pixels
Scroll-Function No
Type RTP (Resistive-Touch-Panel)
Pen Pen with special, resilient pen tip (changeable)
Surface Special foil surface for RTP sensors
Life expectancy approx. 1 Million Signatures
Pressure Stages 1.024
Sample Rate 500 Hz, 4D Samples (x, y, z, t)
Active Signing Area 91 x 45 mm
Resolution 4.096 x 4.096 Pixel absolute ≙ 2.214 x 1.130 ppi
Encryption AES- and RSA-Encryption
Secure Mode Real-time display of the signature without usable biometrics
PDF-Signature RSA signature creation device inside the pad
Hash-Algorithms SHA-256 und SHA-512
More information can be found below in the tab “Security features”.
Connection USB (approx. 2,0 meters cable length)
Power Supply USB
Network (TCP/IP) Yes, with optional signotec USB-Ethernet-Adaptor
Terminal Server / Citrix Yes, optional with hardware FTDI chip or signotec vCOM driver
Citrix Virtual Channel Yes, optional with signotec Virtual Channel driver
Dimensions (W x D x H) 160 x 120 x 10 mm
Weight approx. 180g
Status LED 2-colour status LED
Slideshow Yes, you can configure one standby image inside the pad.
Customization Change of housing color and logo print (on request)
Warranty 2 years

RSA-Security Features​​

The signotec pads (Omega firmware 1.25, Sigma 1.16) have the highest security mechanisms. This will allow a complete chain of evidence in dispute. Depending on the integration, different techniques are used
  • PDF documents can be signed inside the pad and not in the insecure environment of the PC.
  • The biometrics from the signature pad are RSA-encrypted and signed 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 a custom RSA certificate 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.
Weight 180 g
Dimensions 160 × 120 × 10 mm


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