The 7/24/13 CSI: Crime Scene Investigation episode titled "Forget Me Not" had its' first blog entry from the air date of 2/21/13.
This time I'd like to talk a little about some evidence that wasn't mentioned directly but was brought to mind during the discussion of evidence in regards to the wine glass in the hotel room. Of course the obvious and most commonplace evidence is the fingerprint. But they also noted the presence of lipstick on the glass.
If you have ever looked at a lip print you will notice both horizontal and vertical lines within the print. There have been studies that indicate that these patterns of lines may be as unique as fingerprints. For some odd reason, which has not been emphasized to my knowledge, the reliance of these line patterns for identification or individualization never really caught on in the forensic world.
It reminds me of ear prints. Back in the day when there was a definite problem with safe crackers the ear print was considered an important piece of evidence. As it turns out, to hear the tumblers in a locking mechanism, the thief would press his (or her) ear up against the safe. Several cases have been known to include ear print samplers in order to make an ear print comparison.
I guess as life gets more technical and complicated, so does the accountability of evidence. It has been literal decades since I have heard any mention of anyone interested in pursuing studies to validate either ear prints or lip prints.
One aspect of today's security and identification technology does involve the scanning of the iris of the eye. This particular facial feature is still as strong as ever in forensics. I guess that old adage "the eyes have it" is truer than we think.
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