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signotec LCD Signature Pad Alpha

alphaThe Alpha Pad is the newst product from the signotec development department. differs substantially from his two brothers "Sigma" and "Omega".

That affects not only the size, but rather the technology regarding to capture the coordinates of the pen and even the parameters for processing.

Thanks to its display size of 15,6" it is the only Signature Pad on the market, which has the ability to display A4-documents in their original size.in doing so its not just a monitor extension, but rather a "real" Signature Pad like Sigma and Omega with the same powerful free of charge programming interface.

Even the requirement of the written form, which is e.g. essential for loan agreements, can be fulfilled with the Alpha Pad:
The signee places the original document on the Pad and then signs both, the origonal and the digital document, simultaneously via digital blueprint.

If the paper document is not required as a result of the principle of freedom of contract, the ballpoint pen cartridge can simply be replaced with a plastic one.
It is then possible to electronically sign full-page documents directly on the high-resolution display.
Large pen pads are highly sought after by users who want to display complex documents that have to be signed.
Delivery notes with several items or multi-page contracts that you can scroll are just two examples.

Standard pen pads are just too small for this. While there are already large devices on the market that enable signing,
these are usually just monitor extensions where the signer still sees all the other applications running on it.
To make the displayed content remain privat, the Device is provided with the "Privacy Viewing" technology.
Thanks to that the cotent is protectet against prying eyes.

The Pad stands out through its plane surface consisting of hardened mineral glass.
To attach further devices there are 2 USB-ports on the back of the device.
You are able to "print" documents directly into your Pad and sign them on the spot.
The signature is going to be placed exactly on the same position in the electronic document as on the pad.
So there is no need of configuring signature boxes.
The Alpha is going to be connected via USB or Ethernet. So it can directly be used on the PC or in the LAN.
Of course there is also an Alpha version for terminal server environment.
If the Pad is not in use, it´s alos suitable as an excellent advertising medium for slide shows,
thanks to its huge internal storage, which also chaches statistic content.


15,6“ full-colour TFT with adjustable LED backlit and "Privacy Viewing"

Active signing area

344 x 211 mm


344 x 211 x 24 mm


1366 x 768

Number of colours



128 MB RAM and 2 GB Flash-Memory

Input method

ERT (Electromagnetic Resonance Technology)

Data transfer

Secure Data transfer between PC and Pad and RSA-encryption

Cable Port

USB, optional Ethernet


API (SDK) included free of charge


Replaceable Tip technology with inking pen catridge

Pressure sensor unit

1024 pressure stages


2400 lpi




On-screen handwriting, is only sensitive to ERT-Stylus, not influenced by hand touch, no erroneous input


2 Years


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 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.

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