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<title>Yubico Forum</title>
<subtitle>...visit our web-store at</subtitle>
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<updated>2015-07-06T22:55:36+01:00</updated>

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<author><name><![CDATA[Aefan]]></name></author>
<updated>2015-07-06T22:55:36+01:00</updated>
<published>2015-07-06T22:55:36+01:00</published>
<id>https://forum.yubico.com/viewtopic.php?t=1949&amp;p=7526#p7526</id>
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<title type="html"><![CDATA[NFC doesn't work, LED flickering]]></title>

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Hi,<br /><br />i've got a yubikey neo a few month ago. it works without any problems in the first weeks. but now...<br /><br />Problem 1:<br />my smartphone doesn't react when i tap it my yubikey on it. i've tried another smartphone and got the same issue. NFC is enabled.<br /><br />Problem 2:<br />when i plug it into my pc, the LED flickers and go on and off. when i use the personalization tool the yubikey connects and disconnects the whole time.<br />i can write but sometimes i've got write errors. tried it with different usb ports with enough power. i can fix it when i disable CCID in the neo manager, but thats not what i want.<br /><br />i got a new yubikey and this one seems to work so far. i am a little bit confused what happens with the old one and be a little bit scarred that it happens again.<br />are that known issues with the neo?<br /><br />my new neo got detected with yubiclip on android. but when i use taginfo to see informations, it reads the neo, but only shows a few NDEF data and got the error &quot;there seems to be serious communication errors&quot;. don't know what is wrong.<br /><br />thx<p>Statistics: Posted by <a href="https://forum.yubico.com/memberlist.php?mode=viewprofile&amp;u=3800">Aefan</a> — Mon Jul 06, 2015 10:55 pm</p><hr />
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