Forms with authentic signatures

Digital forms with biometric signatures

For many decades, photographs, fingerprints and signatures have been used to uniquely identify individuals. In contrast to fingerprints or irises, handwritten signatures have a special position with regard to biometric properties, as these have both static and dynamic characteristics.

Due to technical progress — mobile devices with stylus input — the possibility of signing digitally is already common practice in many areas of application. HybridForms uses Microsoft’s »Ink Serialized Format« to store a digital signature. This format enables not only the »Ink Object«, a sequence of dots with X and Y coordinates, but also contains information about pressure strength and pressure angle as well as user-defined information (metadata).

HybridForms: Secure signatures
  • Form field: all signature fields are provided with a guilloche pattern by default
  • Pen symbol: field is open for data entry/handwritten signature
HybridForms: Secure Signatures
  • Metadata: [name of the person signing], display of a unique ID as well as [date] and [time of day] of the signature
  • Key symbol: automatic write-protection after five seconds
HybridForms: Secure Signature

Sign digital forms by hand

Would you like to have the correctness of the entries in the form confirmed? A handwritten signature is also a declaration of intent. Metadata such as the time stamp, the fair copy of the signatory’s name as well as the unique GUID of the digital form can restrict subsequent manipulations.

Signature with paper and pencil

Printed paper form:
Signature with pen on paper, document must then be typed or scanned and digitized for archiving

HybridForms: Signature with tablet and pen

Digital form with HybridForms:
Handwritten signature by pen directly on tablet, biometric properties are automatically stored digitally

Optimized data security through encryption

In addition to the security precautions for the signature itself, HybridForms also offers the option of storing the signature data in encrypted form. The signature data consists of the ISF file which contains the metadata and the vectorized signature, as well as the signature graphics in the form of a GIF file. Since this is personal data, increased security measures are necessary.

The signature data can be encrypted during storage and thus stored on the server. This option can be activated or deactivated for each form – or it can be made mandatory for all forms. A public key encryption procedure is used.