Corpses identification by their fingerprint patern useing modern technologies

Lietuvos policijoje nuo 2011 metų pradėta naudotis naujais multibiometriniais prietaisais.Vienas iš jų „Mobile Ident 3" prietaisas, skirtas nustatyti asmens tapatybę pagal pirštų papiliarinio rašto individualių požymių visumą. Siekiant pritaikyti šį prietaisą neatpažintų lavonų tapatybei nustatyti, buvo atlikti eksperimentiniai tyrimai su dvidešimt penkių lavonų apirusiais pirštais. Darbe pateikiama pirštų paruošimo skenavimui „Mobile Ident 3" prietaisu metodika. Išskirti pirštų odos irimo du tipai: pirštų odos džiūvimas ir irimas drėgmėje. Aptarti tokiais būdais apirusių pirštų odos savybių atstatymo būdai ir metodai. Remiantis tyrimo rezultatais, galima teigti, kad tyrimo metodika yra efektyvi bei taikytina visais atvejais, kai lavonai yra neatpažįstamai apirę, tačiau ant nago falangų yra likusių bent minkštųjų audinių arba odos fragmentų.Since 2011 spring Lithuanian police are armed with a device that can scan fingerprints so they can correctly identify suspects who lie about their details. The mobile identification service scans a print, and then checks it by trawling through a national database for the details. But police insist they do not retain the print afterwards. The device Mobile Ident 3 (MI3) is 3M Cogent's latest multibiometric handheld fingerprint identification device for military, law enforcement, and civil government applications such as remote subject identification, disaster scene management, ID document authentication, traffic citation, and much more. It is about the size of a smart mobile phone and allows police to read the fingerprint of an index finger. Based on proven biometric capture technology, the compact, mobile solution enables users to access crucial data in challenging environments, such as those found in national border control areas or crime scenes. MI2 allows users to perform on-the-spot fingerprint and portrait/mugshot acquisition, as well as download a database of suspect fingerprints for local, onboard searching and matching. With its GPRS and Bluetooth communication capabilities, it can submit ANSI-NIST format files via secure protocols to a remote server, or to an Automated Fingerprint Identification System (AFIS) for real-time identification. Operational officers justify the device with their argument that many people stopped for moving traffic offences offer false details initially – so the new device will help police detect who is telling the truth about their identity. MI3 can store up to 300,000 fingerprint templates and has an on-device fingerprint matching capability. The on-board Mobile ID software packages the fingerprints and photos into a NIST file and submits the NIST file to a back-end matching system over a LAN or WAN network. The software provides users with an assortment of tools for viewing, identifying, and saving records, allowing a one-to-one comparison of existing biometric records to verify identity. The database holds prints from people who have been convicted or who are involved in police investigations. This article deals with the police problem of correct identifying corpses. Occasionally skin of their fingers is decomposed in such way, that it requires the special preparation. Most of such fingers are soaked in special solutions. Experimental results with 25 decomposed fingers are discussed