Episode 181 – Fingerprint Analogies

    Fingerprint AnalogiesFingerprint Analogies

Eric Ray and Glenn Langenburg begin the episode with a discussion of an article from a law journal by Barbara Spellman titled, Communicating Forensic Evidence: Lessons from Psychological Science. Among her main points are that statistics, likelihood rations, and random match probabilities are terrible ways of communicating information to juries. She goes on to say that there are a number of misconceptions in latent fingerprint comparisons that must be addressed to juries and that analogies might be a better way to convey information to them. While Glenn and Eric agree and disagree with some of those points, they conclude the episode by reviewing a number of their favorite analogies that they use when testifying or teaching.

Double Loop Podcast with Glenn Langenburg and Eric Ray
Podcast for Latent Print Examiners
Your source for everything about fingerprints
While you’re working on your comparisons, we’ll talk about comparisons

Episode 180 – IAI Recertification Test

    IAI Recertification TestIAI Recertification Test

Glenn Langenburg and Eric Ray report on a heated and controversial topic that caught the attention of the latent print world in the summer of 2018, the re-designed IAI Recertification test. Every five years, Certified Latent Print Examiners must take a comparison test. The old one was notoriously easy, but that has recently changed, and the error rate was higher than some expected. Carl Speckels raised the topic on the CLPEX.com message board and it was discussed at length at the 2018 IAI Conference. The topic is discussed even further here with some suggestions on how to improve the test while keeping it an important aspect of latent print examination.

Double Loop Podcast with Glenn Langenburg and Eric Ray
Podcast for Latent Print Examiners
Your source for everything about fingerprints
While you’re working on your comparisons, we’ll talk about comparisons

Episode 179 – IDEMIA Case AFIS

    IDEMIA Case AFISIDEMIA Case AFIS

Glenn Langenburg and Eric Ray interview Teresa Wu from IDEMIA about the new product launch of IDEMIA’s Case AFIS. The new system can quickly scan in exemplar prints from any type of standard or non-standard cards which then serve as a mini-database for an AFIS search. Efficiency is vastly improved when the computer takes care of the searching aspect of latent print comparisons. This process can also almost eliminate erroneous exclusions from casework. (This episode is sponsored by IDEMIA.)

Double Loop Podcast with Glenn Langenburg and Eric Ray
Podcast for Latent Print Examiners
Your source for everything about fingerprints
While you’re working on your comparisons, we’ll talk about comparisons

Episode 178 – The Staircase – Part 4

    The Staircase - Part 4The Staircase – Part 4

Glenn Langenburg and Eric Ray try to wrap up any final discussion points from The Staircase docu-series. After Michael Peterson’s conviction was overturned and a new trial was ordered, new attorneys come in, but an Alford plea is reached and Michael Peterson is released. Should a retrial have gone forward? What decisions did the original judge regret? What mistakes did the prosecution make? What is a blowpoke? And could an owl have been the murderer and/or the murder weapon?

Double Loop Podcast with Glenn Langenburg and Eric Ray
Podcast for Latent Print Examiners
Your source for everything about fingerprints
While you’re working on your comparisons, we’ll talk about comparisons

Episode 177 – The Staircase – Bart Epstein Interview

    The Staircase - Bart Epstein InterviewThe Staircase – Bart Epstein Interview

Glenn Langenburg and Eric Ray are graciously joined by Bart Epstein in an interview about bloodstain and other forensic evidence from the trial of Michael Peterson in the death of Kathleen Peterson. Bart Epstein explains his involvement in the case, his opinions on the blood evidence, and where he agreed and disagreed with Duane Deaver and Dr. Henry Lee. This episode is also sponsored by IDEMIA and their new product, Case AFIS.

Double Loop Podcast with Glenn Langenburg and Eric Ray
Podcast for Latent Print Examiners
Your source for everything about fingerprints
While you’re working on your comparisons, we’ll talk about comparisons