Fingerprinting Taking Prints Trade & Industrial Education

Review What are prints used for? Prints have been used for a variety of purposes including: Solving crimes Identity confirmation (passport, cashing checks, other) Determining the identity of the deceased Entrance control for buildings and rooms Clearance for employment ©2005 Texas Trade and Industrial Education Criminal Justice: Fingerprinting - Taking Prints

Influencing Factors Allowing the subject to “print themselves” can result in poor prints. Excessive pressure on the finger leaves black stains on the paper. Not enough pressure can result in hard to read prints. Excessive attempts at printing will result in very dry hands which are harder to read when printing. Perspiration or wet fingers will give spots on the print. It is difficult to print cold fingers. Sickness and disease can influence the quality of the prints. ©2005 Texas Trade and Industrial Education Criminal Justice: Fingerprinting - Taking Prints

The Learner In learning to take legible prints you need to: Not be afraid to socially interact with others, and Practice, practice, practice. ©2005 Texas Trade and Industrial Education Criminal Justice: Fingerprinting - Taking Prints

Equipment You Need Ink pad or ink and roller Print paper (either purchased or self-made) Area for printing or stand purchased Soap and clean up supplies Safety rules protect you and those around you from injury.   Whose responsibility is safety and health in the classroom laboratory? (Students’, teachers’, everyone’s) ©2005 Texas Trade and Industrial Education Criminal Justice: Fingerprinting - Taking Prints Trade & Industrial Education

Step 1 Begin by telling the subject that you are going to take their prints and to relax their hand and let you do all the work. When they try to do it with you, stop, advise them again, ask them to let you control their hands. Stop and reiterate this as much as you need to. ©2005 Texas Trade and Industrial Education Criminal Justice: Fingerprinting - Taking Prints

Step 2 If you are using an inked sheet, roll just enough ink on it to have a fine layer that you might see through. Roll the fingers from the left to the right on the ink pad or ink sheet. Roll fingers, one-by-one, over the sheet, without pressing down. Your prints should be wide and not resemble typical finger sizes. ©2005 Texas Trade and Industrial Education Criminal Justice: Fingerprinting - Taking Prints

Step 3 For inking the fingertips, roll them from the top down until the fingers lay flat. Do the left and then the right. Roll the thumbs. ©2005 Texas Trade and Industrial Education Criminal Justice: Fingerprinting - Taking Prints

Clean Up When getting ink off the fingers, make sure the soap is rubbed in well before applying water. Make sure that your print card is away from cleaning material to prevent damage. ©2005 Texas Trade and Industrial Education Criminal Justice: Fingerprinting - Taking Prints