光学指纹头光滑的接触面指纹更容易被复制盗用；而半导体指纹识别属于电容识别模式，活体组织的皮肤下的血液流动、皮肤水分等都会影响电容分布，人的指纹容易获得，但指纹下的血管以及组织模型却不可能获得，用硅胶弄个指模套是行不通的；手指脱离身体太久电容分布就会出现变化，因此半导体识别还有活体验证的特点。

按门铃抓拍/录像功能：门外有人按门铃，门锁上的猫眼会抓拍或者抓录并发到手机，掌握来访人员身份后再决定是否开门。

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