Capture biometric data such as pressure and timing
STU SDK - Windows and Linux
Using our low-level STU SDK you can capture pen data directly from the signature pad.
For all our pads this includes x and y co-ordinates plus pressure and timing information.
With our latest pads there is also a sequence number and a date/time stamp.
Signature SDK (Signature Library) - Windows, iOS and Android
Using our Signature SDK you can encode the biometric data of the captured signature within the signature image - we provide samples illustrating how to do this.
The full version of the Signature SDK (known simply as the "Signature Library") allows the export of the biometric information in one of the following two standard ISO formats:
- ISO 19785 - XML
- ISO 19794-7 - binary data
Please note that the full Signature Library is a fee-paid product - for details of costs please contact your regional Wacom Business Development Manager.
If you are using the "Lite" version of the SDK the only way to access the biometric data is to transfer the signature into one of our analysis tools (see below) for examination.
If you are using DTU tablets to capture signatures you can access the biometric data using the Signature Library as explained above.
Alternatively you can use the Wintab API (supplied with the tablet driver) to access the pen data in real time, i.e. as it is being generated by the tablet.
Further information on Wintab is available from the Wacom Device Kit sections.
Using our Signature SDK for iOS you can encode biometric data captured with one of our Bluetooth Styluses within the signature image - we provide both objective C and Swift examples of how to achieve this.
For lower level access or to construct your own format of biometric data it would be feasible to use our Bluetooth Stylus SDK in combination with the UITouch framework to construct data, however use of the Signature SDK on this platform is the recommended approach.
GSV (General Signature Verification) SDK
This tool allows you build up a template of six signatures or more against which future signatures are to be compared. A new candidate signature is compared against the six existing ones and a score is given indicating its compatibility.
Signatures can be captured dynamically from a pad or imported from an existing file; FSS files can be dragged and dropped onto the sample app.
The GSV supersedes the SSV and DSV mentioned below, although both are still available if needed.
For more information please see Github
SSV (Static Signature Verification) SDK
The SSV is designed to compare two signatures images scanned from paper originals. Scanned signatures can also be compared against dynamic signature data captured using the Signature SDKs.
DSV (Dynamic Signature Verification) SDK
This tool allows you to compare the biometric data of two signatures and gives a score indicating how similar they are where a value of 1 is a complete match.
Signatures can be captured dynamically from a pad, opened from an existing file or copy/pasted from sign pro PDF or our Signature SDK.
This comprehensive analysis tool allows you to examine in detail the biometric data of a signature which has been captured using either sign pro PDF or one of our Signature SDKs.
Two versions are available - the demo version is available on request and enables a signature to be analysed which is captured directly from the user; it does not allow signatures to be opened from other sources such as a file or the clipboard.
The full (FDE) version of SignatureScope allows the user to analyse in detail a signature from any of the following sources:
- Dynamic input by the user
- A file created by our Signature SDK
- Copy/pasting from sign pro PDF or the Signature SDK.
Please note that this full version is only issued to qualified Forensic Document Examiners (FDEs) after signing of a non-disclosure agreement.