国精产品一区一区三区有限公司杨-中文字幕第一区-黄色成人在线-美女被入-六月丁香激情-四虎视频在线观看-黄色成年人视频-国产黄色一级电影-亚洲欧美日韩国产精品-蕾丝视频污-成人少妇影院yyyy-开心色站-亚洲午夜激情视频-看片一区-国产三级91-中文字幕日韩一区二区三区-男同教练gay互吃鳮-www.久久精品.com-狠狠躁18三区二区一区-青青青av-国产精品久久久久久久一区二区-欧美一级片在线看-美女逼逼网站-岛国视频一区-福利电影午夜-韩国主播青草200vip视频-中国美女性猛交-亚洲精品久久久乳夜夜欧美-麻豆 国产-中文字幕免费不卡

Now reader technology is more and more cattle, why do you say, its readers through its internal coil constantly emit an electromagnetic field that is excitation signal, within a range when a proximity card reader on, coil in the card reader is excited by the induction coil produces a weak signal current card as a small integrated circuit power supply, the IC card manufacturing savings have had only given identification number entered. number. And identification numbers can produce electricity thanks to the reader coil, the developer has now developed the inductive reader. Such things will appear smooth, are attributed to the reader coil ah.