A sweat-responsive covalent organic framework film for material-based liveness detection and sweat pore analysis.

ABSTRACT: Covalent organic frameworks have shown considerable application potential and exceptional properties in the construction of stimulus-responsive materials. Here, we designed a sweat-responsive covalent organic framework film for material-based fingerprint liveness detection. When exposed to human sweat, the COF_TPDA-TFPy film can transform from yellow to red. The COF_TPDA-TFPy film, when touched by living fingers, can produce the naked-eye-identified fingerprint pattern through the sweat-induced color change, while artificial fake fingerprints cannot. This technique, which we named material-based liveness detection, can thus intuitively discern living fingers from fake fingerprints with a 100% accuracy rate. Additionally, the distribution of sweat pores on human skin can

SUBMITTER: Hao Q 

PROVIDER: S-EPMC9894872 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature