Yubico Forum

Re: NFC tag not emitting OTP

2015-06-08T08:43:58+01:00

Hit the reset button in the NDEF programming tool, and write the config.

Statistics: Posted by Tom2 — Mon Jun 08, 2015 8:43 am

Re: NFC tag not emitting OTP

2015-06-08T08:27:37+01:00

Tom2 wrote:

However if it works on one phone and not on the other, it is probably because of the phone.

I understand, however my phone wasn't able to read the NFC tag but now reads the data i have written to the tag (http://google.com).
Other phones read the NFC tag data written by the personalization tool (https://my.yubico.com/neo/{OTP})

Tom2 wrote:

I don't really understand what you are trying to do.

I'm trying to find out if there is a way to get the NFC part of my yubikey back to the state it was when i received it.

Statistics: Posted by Stefan — Mon Jun 08, 2015 8:27 am

Re: NFC tag not emitting OTP

2015-06-08T07:56:32+01:00

I don't really understand what you are trying to do.

However if it works on one phone and not on the other, it is probably because of the phone.

No, it is not harmful to the Yubikey to be used over NFC, it is designed for that.

Statistics: Posted by Tom2 — Mon Jun 08, 2015 7:56 am

Re: NFC tag not emitting OTP

2015-06-05T17:00:08+01:00

Ok, maybe not all is lost i've tested with the Galaxy S5 mini of my colleague and the yubikey sends the my.yubico URL + OTP code
The same happens when i tap the yubikey against a Lumia 830 also the my.yubico URL + OTP code.

When i tap it against my own phone i get the URL i've written to the yubikey.

Is there a way i can correct my yubikey?
Is the above harmfull for the yubikey?

Statistics: Posted by Stefan — Fri Jun 05, 2015 5:00 pm

NFC tag not emitting OTP

2015-06-03T10:56:38+01:00

As of yesterday i received my Yubikey Neo in the mail.

Yesterday evening i was fiddeling with the NFC part of the neo and my phone couldn't read the information (Lumia 920 WP 8.1) so no big surprise here.
The NFC app i used can see that a device/NFC tag arrived / departed, now i have overwritten the NFC tag of the Yubikey with a url ( and my phone reads it without any issues, but no OTP or any information appended).

I've searched the forums and google but could not find a way to get my Yubikey to emit the data given in de personalization tool.

Is there a way to restore the NFC tag in my yubikey so it emits what it should emit?

Statistics: Posted by Stefan — Wed Jun 03, 2015 10:56 am