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Fingerprint protector / cufflink

Fingerprint protector

Fingerprint protector is a non-electronic cufflink based on latent action. The inside is filled with a special candle, and the finger gently presses and rubs the upper end of the cuff, which can make the special candle from the solid to the thick material overflow, So that the finger is covered and the fingerprint is covered. Due to non-electronic products, Fingerprint protector can easily avoid detection of some electronic devices.

University

Hunan University of Science and Tec

Hunan University of Science and Tec
Xiangtan, China

Jie Zeng,
Hunan University of Science and Tec

Sheng Guo,
Hunan University of Science and Tec