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US09437196B2 Working method of sound transmission-based dynamic token 有权
基于声音传输的动态令牌的工作方法

Working method of sound transmission-based dynamic token
Abstract:
A working method of a sound transmission-based dynamic token comprises: a dynamic token waiting for disconnection of a key; and when the disconnection of the key is detected, judging the type of a pressed key, and performing a corresponding operation according to different types of keys.
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