Skip to main content

Uses of Mobile Application in Crime Scene Investigation

How to Collect Handwriting Samples for Comparison? (Collection of Standards)


Handwriting of an individual is considered as the written speech, which is particular and specific to an individual. It is an acquired skill and a complex perceptual-motor task, sometimes referred to as a neuromuscular task. Each individual has its peculiarity in Handwriting formation; such characteristics are type of movement, line quality, speed and skill, rhythm, spacing between letters, word and line, slant, alignment, connecting strokes, size and proportions of letters, pen pressure, pen hold, pen position, and pen shading and coordination of writing muscles.


There may be various legal/disputed cases related to handwriting or signatures. It may be a case of forgery, disguise, an anonymous letter, etc. In such instances, it becomes crucial to compare the disputed handwriting/signature with the specimens collected from the suspect or victim to conclude. 



( Handwriting Samples for Analysis )

It is quite challenging for the handwriting expert to collect the proper samples (also know as exemplars or standards) to prove or disprove the authenticity of the source. The handwriting or signature samples are usually collected in three ways:

1. Request Specimens

2. Admitted Writing Samples

3. Chance Standards

1.       Request Specimens:

These are the writing samples obtained from the suspect or the victim on request.  Usually, request specimens are obtained by the handwriting expert/Questioned Document Examiner in the courtroom with due permission of the legal authorities; however, they can also be obtained by the handwriting experts on their letter-heads with his signature, credentials, and stamp along with with the signature of minimum two witnesses. Request specimens are best suited when the suspect or victim is available; however, in cases where they are not available, or the investigation is kept a secret, request specimens can not be collected.

 Principles and precautions during the collection of request specimens

A.   The specimen should be in the same script and style. It means if the disputed sample is in English, then the specimen should also be in English and so on. Like, should be compared with like. Also, the style (whether small letters or capital letters) should be the same.

B. Writing instruments and paper should be similar to those used in executing the questioned documents. If the disputed matter is in ballpoint ink, the same should be used for the specimen collection as well, likewise for pencil and other writing instruments.

handwriting sample


C. The writing format should be similar to the disputed document ( as far as possible). Considering a disputed signature on a bank cheque or any application form, it is always better to create the similar copies of the form or the cheques, to provide the same writing space to the suspect or the victim. This will maintain consistency in the handwriting and will aid in the examination and identification of specific handwriting characteristics easily without much efforts. Also, it will be an excellent tool to present and showcase the similarities in the courtroom. 

D.  If the disputed writing is in text form, then the specimen should consist of the same text. The text should be dictated to the suspect/victim and should not be shown to them at any cost prior to the dictation. Else, this may influence the request specimens.  

E. Any Abusive/obscene texts in the disputed text should not be dictated. However, certain non-obscene sentences or words can be selected and repeatedly dictated several times. Also, dictation should be interrupted at intervals. This will distract the mind of the author, in case he is trying to maintain the consistency in disguise or changing his/her writing.

F. Ask the person to write dates as well since the numbers can be a great tool for comparison, as well. No guidelines to be given for spellings, punctuations, paragraphing, etc., as this may be the characteristic feature of the writer to identify him and to compare with the disputed matter. Several cases have been solved based on such distinctive features as well.

G. The specimens should be collected in both standing and sitting positions. (if possible)

H. The suspect mustn't be told much in advance about the collection of the specimen. He should be given a surprise whenever possible. This will avoid the preparation time for him, and it will be easy for the handwriting expert to obtain unbiased specimens.

I. If the handwriting expert feels the necessity then he/she can collect the specimens in varying speed (Slow, medium, and fast). As many of the features like connecting strokes and terminal strokes are better studied and examined at varying speeds.

J. If the disputed writing is a signature, 10-30 signatures can be collected. If it is a text, then certain words and sentences can be selected to take minimum of 3 samples. There is no upper limit as the time permits.

2.       Admitted writing sample (non-requested)

A. These are the natural writing samples of the suspect written in normal course of his/her day-to-day work.

B. These may be collected from the official communications, letters to friends/relatives or maybe from notes of the diaries and other notebooks. The major advantage of such writing samples in forensic investigations is that, the writer isn't conscious about the writing that it can be used as an exemplar later on.

C. The admitted writing samples can be collected from government documents, utility bills, previous bank applications, official notes, from educational institutions and from friends.

D. The selection of admitted writing should be done on the basis of the words used in the disputed document so as to see the similarities among initial, connecting and terminal strokes.

E. The writing samples should be contemporaneous (of the same time period) as far as possible as to the disputed document.

F. We also check for same writing instruments; but if not possible we just don't check for characteristics like pen pressure, shading, etc. in such cases.

3.       Chance standards (non-requested)

Many times, the culprit prepares practice copies/carbon copies of the signatures and the writing that can be encountered in the premises of the culprit or maybe in trash bins which will act as chance standards. The other types of chance standards can be collected from the friends and relatives if they authenticate it.


By,
Dr. Bhoopesh Kumar Sharma
Forensic Expert & Associate Professor
forensiclecture@gmail.com

Comments

Popular posts from this blog

Crime Scene Search Methods

The Crime Scene is search for the physical evidences (visible or invisible). There are various types of search methods employed by the investigating officers and the forensic scientists at the scene of crime. The searching methods mainly depends on: Type of Crime (Rape, murder, burglary, theft, etc.) Nature of Crime (Homicide, suicide, or accident) Size of the crime scene (macroscopic or microscopic) Location of the crime scene (indoor, outdoor, combination of indoor or outdoor, or any remote area like underwater, desert, etc.) Complexity of the crime scene  Before deciding the search method, all the investigators and the forensic experts must follow the general guidelines (check list) to observe the crime scene after due recording: 1. Are the doors and windows locked or unlocked? Open or shut?  2. Are there signs of forced entry, such as tool marks or broken locks? 3. Is the house or the crime scene is in good order? If not, do

Introduction to Forensic Ballistics

By Dr. Bhoopesh Kumar Sharma Forensic Expert & Associate Professor Introduction to Ballistics: The term ballistics refers to the science of study of the action, motion and  behaviour  of a projectile during its flight in any given medium. The flight path of a bullet includes:  • Travel down the barrel  (Internal Ballistics), • Path through the air  (External Ballistics),  and  • Path through a target  (Terminal Ballistics) Forensic Ballistics: Is that branch of forensic science which deals with the examination of the firearm and related evidences encountered at the scene of crime in a shooting incident, and their linkage to the firearm, and Identification of the shooter. A ballistic expert need to answer the following questions: 1. Type of The Firearms used 2. Identification of the Firearm 3. Individual Characteristics of Firearm 4. Range of Firing 5. Direction of Firing 6. Identification of the Shooter 7. Medico legal aspects: - Suic

Blood Spatter Analysis

What is Blood Spatter Analysis? Blood Spatter Analysis or Blood Pattern Analysis (BPA) is the examination of bloodstain shapes, locations, and distribution patterns, to provide an interpretation of the physical events that gave rise to their origin. In forensic investigations, it is ubiquitous to encounter blood on the crime scene. This blood can be in the form of a pool, dried stains, spatter, expirated blood, etc. Hence, the investigators are required to understand these bloodstains to interpret the events that have occurred on the crime scene, to create a possible hypothesis of the modus operandi, to identify the type of weapon, the direction of the blow, severity of the injury, applicable forces, etc. This whole interpretation is known as Blood Pattern Analysis or Blood Spatter Analysis. What are the Types of Blood Patterns? There are many classifications given by blood spatter analyst around the world. I will be using the most common here, to make it understand in