该门禁系统可以采用IC卡和手机短信两种方式控制，手机控制是作为备用方式，防止读卡器被人为损坏。
One is IC card, the other is GSM. The second way is spare avoiding any manmade possibility that IC identifying instrument. is damaged.
该门禁系统可以采用IC卡和手机短信两种方式控制，手机控制是作为备用方式，防止读卡器被人为损坏。
One is IC card, the other is GSM. The second way is spare avoiding any manmade possibility that IC identifying instrument. is damaged.
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