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Combination Cipher Key / Key

Combination Cipher Key
Combination Cipher Key

Combination cipher key is a key combine with cipher function, each Combination cipher key have three group of rotatable key, and each of rotatable key have 4 pieces of key. The door would be opened only when the combination and angle are right. Because the Combination cipher key serves 3x4x4x4x4 total 768 permutation combinations it can reduce the risk of key lost or key be reproduced.

University

National Cheng Kung University

National Cheng Kung University
Tainan, Taiwan

Wei-Jhih Jhao,
National Cheng Kung University