INTRODUCTION TO LIP PRINT

                                                  Lip Print

 Lip Print identification is a latest forensic investigative technique to combat the criminal on the basis of Lip trace evidences. The branch which deals the identification of human based on lip traces are called as Cheiloscopy. Furrows on the red part of human lips, was first observed by R. Fisher 1902. However, Two Japanese Scientist Y. Tsuchihashi & T. Suzuki was examined lip prints of humans and established that arrangement of lines on the red part of human lips is unique characteristics for each individual.
The Use of Lip Prints in Crime Detection: Lip print is a kind of trace evidence that can be reveled at the point of direct, physical contact of the perpetrator’s lips with an object at the scene of crime. this trace should be looked for on cutlery and crockery items, particularly, if a meal was eaten at the scene of a crime.
Sometimes this evidence have also revealed on the surface of windows, doors, plastic bags and cigarette butts. Finding and recovery of lip traces is not difficult. The techniques used in Fingerprinting are very good for this purpose. The easiest method makes use of fingerprint powders and fixing on foil. Aqua print and cyanoacrylamide may also be applied. Control samples can be taken by covered the mouth with a thin layer of skin care cream. After about 3 min, a strip of paper mounted on specially profiled roller was lightly pressed to the lips. The impression was subsequently visualized with the use of Ferromagnetic powder used in developing latent fingerprints, and then fixed on transparent foil. Identification of Individual Features: In case of lip print identification is establishing on the basis of 23 types of Individual features. 
The types of features were differentiated as a result of microscopic examination of lip prints. The types of patterns & features are listed as follows-types of Patterns Individual Features of line patterns on red part of lips The practical use of lip prints in direction work shows that the trace of this kind carries a huge amount of precious information which can be used in the reconstruction of the events, establishing versions and checking then and identifying suspects.