Forged Signature or Disputed Will? How an Examiner Proves It

A forged signature examination is the scientific comparison of a questioned signature against known genuine signatures of the same person, carried out by a forensic document examiner to determine whether it is authentic. It answers one narrow question — did this person write this, or did somebody else? — from measurable features of the writing and the physical document, and produces a written expert report that can be relied on in legal or regulatory proceedings. Below: what it can and cannot conclude, what gives a forgery away, why originals and good exemplars matter, and what to do first.

What can a forged signature examination actually conclude?

The examiner compares the questioned signature with a body of known genuine signatures and asks whether they share the same writing habits, or whether the questioned signature shows features a genuine writer would not produce and a copyist would.

The available conclusions are specific: consistent with the known writing; inconsistent with it and showing indications of simulation or tracing; or evidence that does not permit a firm conclusion. Opinions are graded because their strength depends on the quality of the questioned item, the number and quality of the exemplars, and how distinctive the writer’s habits are. An honest report says how strong the evidence is, not what the client hopes to hear.

Two boundaries. A signature examination says nothing about personality, character or state of mind — that is graphology, not a forensic science; our forensic document examination is confined to what the writing and the paper physically show. And while an examination can often establish that a signature was not written by the purported signer, identifying who wrote it is a separate and harder question, because a forger imitating someone else suppresses their own habits.

What makes a genuine signature hard to forge

Someone who has signed their name thousands of times does it without thinking, at speed and by motor habit, and that speed leaves marks very difficult to reproduce by a copyist concentrating on the shape of the letters. The examiner studies:

• Pen pressure — the habitual pattern of heavy and light strokes.
• Rhythm and speed — tapering strokes and smooth curves that accelerate and slow in the same places each time.
• Line quality — the continuity and smoothness of the ink line.
• Connecting strokes — how letters join, where the pen lifts and where it returns.
• Initial and terminal strokes — especially the flying finish of a stroke made without slowing down.
• Proportions, slant and alignment — the relative heights of letters and the signature’s relationship to the baseline.
• Natural variation — nobody signs identically twice, and the examiner must know the writer’s normal range before judging anything outside it, which is why a single specimen is nearly useless.

What a forgery betrays

A forger draws a picture of a signature rather than writing one, and copying leaves traces:

• Slow, drawn lines — strokes without the tapering and speed of natural writing; curves turn angular and the line is uniformly heavy.
• Tremor of forgery — a fine, unnatural wobble caused by slow, careful movement, distinct from the coarser tremor of age or illness.
• Pen lifts and hesitation — the pen stops and restarts where a fluent writer would never pause, often where the forger checked the model.
• Blunt beginnings and endings — strokes that start and stop with the pen resting on the paper.
• Retouching and patching — overwritten segments where the forger went back to correct a stroke.
• Correct shape, wrong construction — letters that look right but were built in a different order or direction from the writer’s habit.

None of these alone proves forgery: illness, a cramped position or a poor pen can produce tremor in a genuine signature, which is why exemplars must reflect the writer’s condition at the time.

Traced, simulated and freehand forgeries

Two signatures that superimpose almost exactly are the mark of a tracing, because nobody produces the same signature twice.

Why known exemplars decide the case

The exemplars are the other half of the evidence, and the outcome depends heavily on their quality. Good exemplars are:

1. Contemporaneous. Writing changes with age, health, eyesight and medication; samples from around the date of the questioned document are worth far more than those from years away.
2. Of the same kind. A full signature is compared with full signatures, not initials, and where possible on the same type of document.
3. Sufficient in number. Enough to show the writer’s natural range of variation; fewer is sometimes unavoidable, and the conclusion is qualified accordingly.
4. Verifiably genuine. Signatures on official filings, bank records, correspondence, passports and earlier deeds whose authenticity no party disputes.

Collected exemplars, made in the ordinary course of life before any dispute, are the most valuable because the writer had no reason to disguise or perform. Request exemplars, written on demand, show how the person writes today, but a living writer who now wishes to deny a signature can alter their writing, consciously or not, so they are never relied on alone. In a disputed will the writer is unavailable and the case rests on collected exemplars from the deceased’s papers.

Originals versus photocopies

Ask any examiner what they want first: the original. Pen pressure, indentations, pen lifts, retouching, ink differences, erasures and the make-up of the paper exist only there; copying flattens all of it.

A copy can still be examined: proportions, letter construction, connecting strokes and gross line quality survive reproduction, and a tracing can sometimes be demonstrated from a copy alone. But the conclusions are narrower and will be expressed as such, and a copy cannot rule out a genuine signature transplanted onto another page and copied to hide the join. If the original exists, secure it; if only a copy exists, say so at the outset.

Where signature disputes arise in Ghana

These disputes arise in Accra, Kumasi, Takoradi and across West Africa in a few recurring forms:

• Wills and estates — a will produced after a death that nobody knew existed, or whose signature or attestations look unlike the deceased’s hand.
• Land and property — indentures, deeds of gift, powers of attorney and site-plan endorsements bearing the signature of a landowner, family head or chief, disputed in a sale or a land matter.
• Loan guarantees and bank mandates the purported signer says they never signed.
• Company resolutions and share transfers relied on to change control of a company.
• Tenancy and commercial agreements whose terms are contested along with the signatures on them.

Whether a document is legally valid — execution, attestation, capacity, undue influence — is for counsel, and nothing here is legal advice. The examination answers the physical question underneath: is this the writing of the person it is attributed to? The wider principles are in our overview of forensic document examination and fraud detection; certificates and academic records have their own route, covered in our guide to fake certificate verification in Ghana.

The process, the report and testimony

A finding is only as strong as the evidence trail behind it. There are four stages.

Intake and chain of custody. The questioned document and every exemplar are logged, photographed and secured under a documented chain of custody before anything else happens, so the integrity of the evidence cannot be attacked later.

Scientific examination. The questioned signature is examined under magnification and varied lighting, its construction and line quality analysed, and compared feature by feature with the exemplars. Where the page warrants it, the wider techniques apply: detection of alterations and additions, restoration of indented impressions, deciphering of obliterated or faded writing, identification of the equipment that produced any printed matter, and dating from the physical or chemical properties of ink and paper.

Findings and expert report. The report records the items examined and their custody; the exemplars relied on and why they were accepted as genuine; the methods; the observations, with enlarged comparison charts of questioned and known writing side by side; the conclusion and its strength; and any limitations, such as a copy in place of the original or too few exemplars. It is written for a non-specialist and built to survive cross-examination.

Testimony support. Where the matter proceeds, the findings are prepared for, and where required presented in, legal or regulatory proceedings; under questioning the examiner explains rather than advocates. The full service is described on our handwriting expert and signature verification page; the wider discipline is on our forensics overview.

Callout — a genuine signature does not settle the document. A will or deed can carry the deceased’s real signature and still have been altered above it: a clause inserted, a beneficiary substituted, a page replaced. Ask for the page to be examined, not only the name at the bottom.

What to do the moment you suspect a forged signature

1. Do not confront anyone. A person who learns a signature is under suspicion can destroy the original, produce a better one or start altering exemplars. Keep the circle small.
2. Do not handle the original unnecessarily. No writing, stapling, folding, tape or sticky notes, and do not pass it around.
3. Secure the original. Keep it flat in a clean folder and record who has access. If a bank, registry or lawyer holds it, ask in writing that it be preserved.
4. Gather exemplars. Collect known, undisputed signatures from around the relevant date — earlier deeds, bank records, letters, official forms, identity documents — and do not ask the suspected forger to supply them.
5. Seek legal advice. Counsel will advise on the proceedings, on preserving evidence and on documents held by third parties.
6. Commission the examination early. It is cheapest and most useful before the estate is distributed, the land transferred or the loan called. A finding changes the conversation; a suspicion does not.

If a signature on a will, an indenture or an agreement is in question, contact us to discuss what can be examined and what it may show — handled in strict confidence, with no obligation.