Document Detail

Scanning the pressure-induced distortion of fingerprints.
MedLine Citation:
PMID:  15612202     Owner:  NLM     Status:  MEDLINE    
Fingerprint recognition technology is an important part of criminal investigations it is the basis of some security systems and an important tool of government operations such as the Immigration and Naturalization Services, registration procedures in the Armed Forces, and so forth. After the tragic events of September 11, 2001, the importance of reliable fingerprint recognition technology became even more obvious. In the current study, pressure-induced changes of distances between ridges of a fingerprint were measured. Using calibrated silicon pressure sensors we scanned the distribution of pressure across a finger pixel by pixel, and also generated maps of an average pressure distribution during fingerprinting. Emulating the fingerprinting procedure employed with widely used optical scanners, we found that on average the distance between ridges decreases by about 20% when a finger is positioned on a scanner. Controlled loading of a finger demonstrated that it is impossible to reproduce the same distribution of pressure across a given finger during repeated fingerprinting procedures.
S Mil'shtein; U Doshi
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Scanning     Volume:  26     ISSN:  0161-0457     ISO Abbreviation:  Scanning     Publication Date:    2004 Nov-Dec
Date Detail:
Created Date:  2004-12-22     Completed Date:  2005-01-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7903371     Medline TA:  Scanning     Country:  United States    
Other Details:
Languages:  eng     Pagination:  270-2     Citation Subset:  IM    
Advanced Electronic Technology Center, Electrical and Computer Engineering Department, University of Massachusetts, Lowell, MA 01854, USA.
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MeSH Terms
Automatic Data Processing / instrumentation,  methods*
Reproducibility of Results
Reg. No./Substance:

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