Inkjet-Printed Carbon Nanotubes for Fabricating a Spoof Fingerprint on Paper
Author(s) -
Veasna Soum,
Sooyoung Park,
Albertus Ivan Brilian,
Yunpyo Kim,
Madeline Y. Ryu,
Taler Brazell,
F. John Burpo,
Kevin Kit Parker,
OhSun Kwon,
Kwanwoo Shin
Publication year - 2019
Publication title -
acs omega
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.779
H-Index - 40
ISSN - 2470-1343
DOI - 10.1021/acsomega.9b00936
Subject(s) - fingerprint (computing) , spoofing attack , inkwell , computer science , inkjet printing , fingerprint recognition , materials science , carbon nanotube , capacitive sensing , artificial intelligence , nanotechnology , speech recognition , computer network , operating system
A spoof fingerprint was fabricated on paper and applied for a spoofing attack to unlock a smartphone on which a capacitive array of sensors had been embedded with a fingerprint recognition algorithm. Using an inkjet printer with an ink made of carbon nanotubes (CNTs), we printed a spoof fingerprint having an electrical and geometric pattern of ridges and furrows comparable to that of the real fingerprint. With this printed spoof fingerprint, we were able to unlock a smartphone successfully; this was due to the good quality of the printed CNT material, which provided electrical conductivities and structural patterns similar to those of the real fingerprint. This result confirms that inkjet-printing CNTs to fabricate a spoof fingerprint on paper is an easy, simple spoofing route from the real fingerprint and suggests a new method for outputting the physical ridges and furrows on a two-dimensional plane.
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