From ink to evidence.

FindCleanCompareScoreExplain
  1. 01 Find

    Signaturepage 2 · located by template

    Template boxes on fixed forms. Anywhere else, Nib finds it on the page.

  2. 02 Clean

    Form lines, printed text and stamps come off. The ink stays.

  3. 03 Compare

    referencequestionedreference0.950.92letter shapesstroke flowproportions

    Against the person’s own references, and how much their hand naturally varies.

  4. 04 Score

    0.94, band 0.88 to 0.97, below approve 0.95

    A probability, with a band that shows how sure it is. Your policy sets the lines.

  5. 05 Explain

    model
    nib v2.2
    policy
    default@1
    api version
    2026-09-27

    Reasons, flags and a version stamp on every result.

What Nib looks at

  • Letter shapes
  • Stroke flow
  • Proportions
  • Pen pressure, where visible
  • Pace, where visible

Try it

See it answer your documents.