Latent fingerprints on different type of screen protective films


  • Yuttana Sudjaroen Faculty of Science and Technology, Suan Sunandha Rajabhat University
  • Titaree Thongthienchai Department of Forensic Science, Faculty of Science and Technology, Suan Sunandha Rajabhat University, U-thong Nok Road, Dusit, Bangkok 10300, Thailand


Screen protective film, Latent fingerprints, Black powder method, Anti-fingerprint coating


The purpose of this research was to study the quality of latent fingerprint on different types of screen protective films including screen protector, matte screen protector, anti-fingerprint clear screen protector and anti-fingerprint matte screen protector by using black powder method in developing latent fingerprints. The fingerprints were performed by 10 volunteers whose fingers (right index, right thumb, left index and left thumb) were stubbing at different types of screen protective films and subsequently latent fingerprints were developed by brushing with black powder. Automated Fingerprint Identification System (AFIS) counted the numbers of
minutiae points from 320 latent fingerprints. Anti-fingerprint matte screen protective film produced the best quality of latent fingerprint with an average minutiae point 72.65, followed by matte screen protective film, clear screen protective film and anti-fingerprint clear screen protective film with an average minutiae point of 155.2, 135.0 and 72.65 respectively. The quality of latent fingerprints developed between a clear and a matte surface of screen protective films showed a significant difference (sig>0.05), whereas the coat and the non-coat with anti-fingerprint chemical revealed a non-significant difference (sig<0.05) in their number of minutiae points.


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How to Cite

Sudjaroen, Y. ., & Thongthienchai, T. . (2022). Latent fingerprints on different type of screen protective films. Suan Sunandha Science and Technology Journal, 3(2), 22–25. Retrieved from



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