| 摘要 |
A system for covertly activating an alarm comprising: at least one processor; at least one covert 3D sensor; and computer executable instructions readable by the at least one processor and operative to: use the at least one covert 3D sensor in conjunction with gesture recognition software to sense at least one covert gesture made by at least one person in a space; and covertly trigger an alarm based on the at least one covert gesture.
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