The Forger’s Impossible Assignment

Think about a combination lock. A two-number combination is easy to crack by trial and error. A twelve-number combination is considerably harder. Now consider this: a trained forensic examiner can identify twenty-eight distinct movements in a single ink stroke of a genuine signature. That’s the forger’s assignment: get all twenty-eight right, in the correct sequence, every time. They don’t.

Can someone fake a signature so well that a forensic document examiner can’t detect it? No. And that answer doesn’t waver. Forensic document examination has been a recognized science for hundreds of years, and that track record exists because the analysis actually works.

What I Do, and What I Don’t

There’s an important boundary here worth stating clearly, because people ask me about all kinds of things.

I don’t deal with baseball cards. I don’t deal with scribbles. Paintings rarely come across my desk. There are professional forgers who have put ten thousand hours into copying a celebrity’s two-second autograph: a quick, stylized signature designed for mass production. That’s a specialist problem and a different kind of analysis entirely.

What I work with are documents: wills, contracts, letters, deeds. A page of handwriting. Substantive evidence. When that material is in front of me, the answer to the forgery question is almost always clear.

Why Holographic Wills Are the Clearest Cases

The cases I feel most confident about are those involving what the law calls a holographic will, meaning a will written entirely in the testator’s own handwriting. A full handwritten page gives me an enormous amount of material to work with. Dozens of letter formations, transitions, pressure patterns, rhythm variations. Enough data points to compare comprehensively.

When it comes to wills, I’m 100% accurate, because there is enough evidence to examine. The combination lock has all its numbers. Nobody gets all twenty-eight right by accident.

Holographic wills come up regularly in Miami-Dade and Broward County probate proceedings, and they’re among the strongest cases for forensic document examination. A full page of genuine handwriting versus a full page of fabricated handwriting: the differences are there. Finding them is what I do.

When It Gets Harder: The Symbolic Signature

Not every case is that clear. If a signature is reduced to two or three letters, what I call a symbolic signature, and we’re working with far fewer data points. A two-number combination lock, not a twelve-number one.

In those situations, the number of comparison samples matters even more than usual. We need dozens of authentic examples to build a reliable baseline. And the fine details carry more weight: ink striations, pen lifts, the microscopic behavior of the pen at the start and end of each stroke. Those details are harder to analyze but they’re still there. The task is harder, not impossible.

Why It’s Essentially Impossible to Get Away With

Here’s the core problem a forger faces. Replicating what a signature looks like is one task. Replicating how it was made, the speed, the pressure, the unconscious habits of the person who wrote it thousands of times before, is a completely different one. The first is difficult. The second is essentially impossible to do consistently.

A skilled forger might study a signature for months. They might practice it until it looks convincing to the naked eye. But the twenty-eight movements are still wrong. The pen lifts happen in different places. The pressure doesn’t match. The connection habits between letters are off. Under examination, the forgery surfaces.

This is the reason we stay busy. People keep trying. They don’t succeed. And when the truth of a document matters in a disputed will, a questioned contract, or a contested deed, that’s when you bring in the examiner, and they come to court and testify.

If you have a questioned signature or a document you believe may be forged, we can help. Start with a consultation and we’ll tell you what an examination would involve and what it can determine.

FloridaHandwritingExperts.com

Or call us: 1-305-459-1544. Your first consultation is free.

Bart Baggett
Forensic Document Examiner | Expert Witness | Legal Consultant
The Nation’s Leading Forensic Handwriting Expert
CEO, Handwriting Experts Inc.

YouTube: @thehandwritingexpert  |  LinkedIn: bartbaggett  |  Facebook: bartbaggett  |  Instagram: @forensichandwritingexpert

Frequently Asked Questions

Can someone fake a signature so well that a forensic document examiner can’t detect it?

No. A qualified, court-experienced forensic document examiner working with adequate evidence can distinguish an authentic signature from a forged one. The science has been established for hundreds of years and the underlying reason is straightforward: a forger can replicate what a signature looks like, but not how it was made. Those are two different things, and the second one always leaves evidence.

What are the “28 movements” in a signature stroke?

A single ink stroke in a genuine signature contains multiple distinct components: the entry angle, the pressure applied, the speed of the pen, the direction and curvature of the stroke, the exit path, and so on. A trained examiner can identify and analyze these components individually. Replicating all of them correctly, in the right combination, is what makes forgery detectable. Miss enough of them, and the forgery surfaces.

Why are holographic wills particularly strong cases for forensic examination?

A holographic will is written entirely in the testator’s own handwriting, which means the document provides a substantial body of evidence. Multiple letter formations, transitions, pressure patterns, and rhythm characteristics all give the examiner a rich baseline to compare against the questioned signature or passages. The more genuine handwriting material exists, the more comprehensive and confident the analysis can be.

What is a symbolic signature and why is it harder to analyze?

A symbolic signature is one reduced to just a few letters or marks, providing very few distinct data points for comparison. With minimal writing, the examiner needs many more authentic comparison samples to establish a reliable baseline, and the fine details like ink striations, pen lifts, and microscopic stroke characteristics carry more analytical weight. The analysis is harder but not impossible.

Does this mean a forged signature is always detectable?

When sufficient evidence exists, meaning adequate authentic comparison samples and a questioned document with enough writing to examine, yes, the forensic examination is conclusive. The difficulty increases when the writing is minimal (a symbolic signature, a damaged document) or when comparison samples are scarce. In those situations, the opinion may be inconclusive rather than definitive, which is a different outcome from undetectable.

What about professional forgers who practice a signature for thousands of hours?

Professional autograph forgers who spend years mimicking a celebrity’s signature for the memorabilia market are a different problem from legal document forgery. That kind of forgery targets quick, stylized autographs designed for rapid reproduction. Legal document forgery involves full handwriting across pages of text, wills, contracts, and letters, all material that gives an examiner far more to work with. The longer and more substantive the writing, the clearer the analysis.

How does a forensic document examiner testify about a forged signature in court?

The examiner presents their methodology, their findings, and their conclusion with a stated level of certainty. They explain what was compared, what was found, and why the evidence supports the conclusion. They must then hold up under cross-examination. This is why both the examiner’s technical training and their courtroom experience matter. The analysis has to be sound, and it has to be defensible.