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Amido Black in Fingerprint Development: Principle, Procedure, Advantages, and Disadvantages

Amido Black in Fingerprint Development principle, procedure advantages and disadvantages

Amido Black, also known as Acid Black 1, is an acid diazo dye used by forensic fingerprint experts to detect and enhance latent blood marks. Amido Black stains proteins forming a dark blue-black colored product. It is the most widely used protein stain dye for the development of bloody fingerprints on both nonporous and porous …

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6 Tests to Solve Disputed Paternity and Maternity in Forensic Science Cases

6 Tests to Solve Disputed Paternity and Maternity in Forensic Science Cases

There are three main reasons why disputed paternity and maternity cases are used in forensic sciences. Following are the tests and techniques used in solving disputed paternity and maternity cases involving legal systems and forensic evidence. 1. ABO Blood Group System Human blood type is predetermined by particular GENES that we inherit from our parents. …

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Ridge Counting in Fingerprints: Rules, Need, Calculation With Images

Ridge Counting in Fingerprints Rules, Need Calculation With Images

Ridge counting is a technique that involves counting the intervening ridges present between the core and delta of a fingerprint. In essence, this method quantifies the ridges between these two reference points, helping to categorize fingerprints based on their ridge counts. Ridge counting is mostly used for loop patterns. For arches, ridge counting is generally …

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Crime Scene Search Methods and Patterns: Types and When to Use With Examples

Crime Scene Search Methods and Patterns Types and When to Use With Examples

What is Crime Scene Search? A Crime Scene Search is a systematic method designed to locate evidence within a crime scene or other areas where evidence might be present. This process typically involves: In other words, it is a technique used to comprehensively search the area to uncover potential evidence that helps in solving cases. …

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Strip (Lane) Search Method: Procedure, When to Use? With Examples

Strip or lanes Search pattern Method Procedure, When to Use With Examples

The Strip Search Method is a widely-used and effective approach to finding evidence at large crime scenes. They are characterized by their unique method of search that somewhat resembles the line method. Other Names: Lane search or parallel search In the strip or lane search method, searchers systematically walk in straight lines of constant width …

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Spiral (Circle) Search Method: Procedure, When to Use With Examples

what is spiral or circle search pattern method in crime scene with examples

The spiral (also called circle) search method is a unique and specialized crime scene search pattern that involves circular movements (inward or outward) across the area involved. It is often employed in confined interior or exterior crime scenes, such as small fenced yards or cramped spaces. This technique requires searchers to be highly attentive to …

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Wheel (Ray) Search Pattern Method: Procedure, When to use With Example

The wheel search method is used in crime scene investigation where there is a distinct central point. Here, investigators move from the center of the scene along linear paths like the spokes of a wheel toward the outer perimeter. Other Names: Radial, Spoke, or Ray Search Pattern method of crime scene investigation. Wheel or ray …

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How to Search Vehicles for Evidence? A Practical Guide and Tips

How to Search Vehicles for Evidence A Practical Guide and Tips

When conducting a vehicle search, an investigator has to divide it search into majorly three main parts. This includes preliminary preparation, exterior search, and interior search. Each has its significance in finding clues and evidence related to a crime. So, the following are the step-by-step guidelines and procedures for how to conduct a vehicle search …

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