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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Locord's systems is -
assistant
The correct answer is  Poroscopy or Locards system is study of pores of sweat glands on the epidermal ridges at fingeips. Each mm of ridge contains 9-15 pores. It is useful when fragments of fingerprints are available. ref :Dr.K.S.Narayana Reddys Synopsis of Forensic Medicine & Toxicology 27th edition pg. 47.