酒店的这种门钥匙是什么东西?仅仅就是金属片吗?[附照片]

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 楼主| cnchip 发表于 2008-11-23 23:33 | 显示全部楼层 |阅读模式
应该不像,前后是叠压起来的,内部似乎有什么东西,但外壳却是金属的!<br />正面,上面的字母应该是“GANG&nbsp;SHENG”:<br /><img src="https://bbs.21ic.com/upfiles/img/200811/20081123233040215.gif"><br /><br />反面,什么也没有:<br /><img src="https://bbs.21ic.com/upfiles/img/200811/20081123233311899.gif">
josin7342 发表于 2008-11-24 13:59 | 显示全部楼层

酒店的这种门钥匙是什么东西?仅仅就是金属片吗

不是的,它是有電路控制的.<br />有高檔的也有低樑之分.<br />如有興趣請與我聊<br />ljsh108@sohu.com
gwall1 发表于 2008-11-24 14:19 | 显示全部楼层

酒店的这种门钥匙是什么东西?仅仅就是金属片吗

里面有微处理器
PowerAnts 发表于 2008-11-24 14:35 | 显示全部楼层

边缘磨损的地方发蓝

难道只是一层电镀?密度方面与金属有区别吗?
 楼主| cnchip 发表于 2008-11-24 15:49 | 显示全部楼层

楼上老大:

正面本来是覆盖了一层蓝色的透明塑料薄膜,后来被我撕掉了,你看到的边缘的是没撕尽的残留塑料薄膜!<br /><br />不是磨损的,你提醒了,可能前后两层还是绝缘的,我就没太注意了!<br /><br />视觉和感官判断应该是金属体。<br /><br />不少旅店都有啊,没注意?要么就是低档旅馆才用,看来都是有钱人不住便宜旅店啊,呵呵
PowerAnts 发表于 2008-11-24 16:17 | 显示全部楼层

有没有盲区?

旋转钥匙,如果在金属壳的缝与主机平行时有盲区的话,可认为是用交变电场进行工作,两个金属层所处的电场不同,即有电势差。<br />没见过实物,只是猜想
吕布 发表于 2008-11-24 16:23 | 显示全部楼层

好久没见这玩意了

貌似里面不会有什么东西,不然为何偏用金属外壳的,<br />最好敲开来看看,最多赔个10块钱
李冬发 发表于 2008-11-24 16:38 | 显示全部楼层

一堆小磁铁

  
tyw 发表于 2008-11-24 17:24 | 显示全部楼层

磁卡锁

<img src="https://bbs.21ic.com/upfiles/img/200811/20081124171933184.gif">
 楼主| cnchip 发表于 2008-11-24 19:04 | 显示全部楼层

对,就是tyw贴的这种!

  
tyw 发表于 2008-11-24 20:11 | 显示全部楼层

这个领域的战斗也很激烈

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 楼主| cnchip 发表于 2008-11-25 16:50 | 显示全部楼层

好啊,谢谢tyw前辈!

  
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