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  • Signature Pad Alpha

    The Alpha Pad is the one of the newest products from the signotec development department.

  • Short summary :

  • Alpha differs substantially from the other two pads "Sigma" and "Omega". This device differs not only in size but in the technology to capture the coordinates of the pen and also, has distinct parameters for processing. With its amazing display size of 15.6" it is the signature pad in the market, that has ability to ability to display the A4 documents in their original size. Alpha is not just an extension for your system rather a signature pad same as Sigma and Omega with the same powerful free of charge programming interface.

    You can even fulfil the requirement of written form with Alpha pad. Example: essential for loan agreements and so on.


The signee places the original document on the Pad and then signs both, the original and the digital document, simultaneously via digital blueprint.

The ballpoint pen cartridge can simply be replaced with a plastic one, if the paper document is not required as a result of the principle of freedom of contract.

Alpha has made it possible to electronically sign a full-page document directly on a high resolution display. These kinds of pads are highly sought by the users who wish to display and sign complex documents. Delivery notes with several items or multi-page contracts that you can scroll are just two examples. For this device, standard pens are too small.

There are already similar products in the market the allows digital signature, however they are just monitor extensions where signer can also see all the other applications running in it.

There is a special "Privacy Viewing" technology in Alpha to make the displayed content more private for reading. Thanks to this feature, it makes the critical content safe from 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 can sign the documents and able to "print" them on spot. The signature placement will be exactly in the same area in the electronic document as on the pad. So, there is no requirement of configuring the 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 and of course there is also an Alpha version for terminal server environment.

If the Pad is not in use, it is also suitable as an excellent advertising medium for slide shows, thanks to its huge internal storage, which also caches statistic content.

Display 15.6" full-colour TFT with adjustable LED backlit and "Privacy Viewing"
Active Signing Area 344 x 211 mm
Dimensions 344 x 211 x 24 mm
Resolution 1366 x 768
Number of colours 65,536
Memory 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
Software API (SDK) included free of charge
Tip-technology Replaceable Tip technology with inking pen cartridge
Pressure sensor unit 1024 pressure stages
Resolution 2400 lpi
Pen Battery-Free
Sensor On-screen handwriting, is only sensitive to ERT-Stylus, not influenced by hand touch, no erroneous input
Warranty 2 Years
The signotec pads (Omega firmware 1.25 and 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.
  • or details please refer to the documentation.

  • 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.
  • or details please refer to the documentation.

Astral strives to bring the best digital signature experience to our customers around the world through its innovative hardware and software.

Astral welcomes your feedback on its products.

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