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Loops are the most common fingerprint patterns, accounting for 60%-70% of all patterns, where ridges enter from one side of the finger, make a U-turn around a central point (core), and exit on the same side of the finger. This characteristic U-turn of the ridge is called a “recurve”.  However, all U-turn patterns are not …

Loop Fingerprint Pattern: 5 Rules and 4 Types With Images Read More »

11 Rules of Choosing and Identifying Core in Loop Fingerprint Patterns Examination of loop fingerprint patterns starts with identifying the core. In general, the core is considered the center point in a fingerprint pattern. In any case, a fingerprint expert has to follow some sets of rules to assign an area in the fingerprint as …

15+ Rules for Choosing Core and Delta in Loop Fingerprint Patterns Read More »

Forensic fingerprint experts follow a set of rules for comparing fingerprints. But in this simple guide, I will show you how you as a teacher can create a fun activity for their students who have no prior knowledge of comparing fingerprints. For this forensic fingerprint comparison school activity, you don’t need any sophisticated tools. The …

Comparing Fingerprints At School: A Fun Activity for Students and Teachers Read More »

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 …

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