Not all surfaces are alike. Why are clothing, carpet, fabric, and other textile surfaces difficult to obtain fingerprints from?
Answer Because textiles are super absorbent
Due to the absorbency of textile fibers, they are nearly impossible to use to obtain any one of the three types of fingerprints. These three types are latent (fingerprints from natural oils/sweat), visible (blood or ink stains, etc.), and plastic or molded (prints in soft surfaces, like cheese or soap).
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