# Challenge setting up the onlykey as fido2/U2F

**URL:** <https://onlykey.discourse.group/t/challenge-setting-up-the-onlykey-as-fido2-u2f/582>\
**Category:** Uncategorized\
**Created:** [December 31, 2021, 12:47pm UTC](https://onlykey.discourse.group/t/challenge-setting-up-the-onlykey-as-fido2-u2f/582 "2021-12-31T12:47:34Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![yoga](https://avatars.discourse-cdn.com/v4/letter/y/8baadc/32.png) [@yoga](https://onlykey.discourse.group/u/yoga)\
**Post date:** [December 31, 2021, 12:47pm UTC](https://onlykey.discourse.group/t/challenge-setting-up-the-onlykey-as-fido2-u2f/582/1 "2021-12-31T12:47:34Z")

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I recently purchased the onlykey and read through the user manual. However, I am having problems setting up the onlykey as a fido2/U2F. I got the onlykey to work as OTP but I am struggling to get it to work as fido2/U2F. Can someone point me in the right direction.

Thanks!

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**Author:** ![t11](https://avatars.discourse-cdn.com/v4/letter/t/8e7dd6/32.png) [@t11](https://onlykey.discourse.group/u/t11)\
**Post date:** [January 1, 2022, 10:45pm UTC](https://onlykey.discourse.group/t/challenge-setting-up-the-onlykey-as-fido2-u2f/582/2 "2022-01-01T22:45:48Z")

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It works just like any other FIDO2 security key there is no setup required. You just press a button to register, and press a button to authenticate.

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**Author:** ![yoga](https://avatars.discourse-cdn.com/v4/letter/y/8baadc/32.png) [@yoga](https://onlykey.discourse.group/u/yoga)\
**Post date:** [January 2, 2022, 4:47pm UTC](https://onlykey.discourse.group/t/challenge-setting-up-the-onlykey-as-fido2-u2f/582/3 "2022-01-02T16:47:45Z")

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Thank you for your response. I am trying to use the onlykey as a security key with my yahoo account. When it asks to insert the security key, I then insert the onlykey and put in the pin to unlock the key. However, yahoo does not recognize the onlykey. I also touch the #1 slot because that is where I want to place the security key. Is there something else that I need to do with the only key app in order to use it as a security key? Again I am newbie and I greatly appreciate your response.

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**Author:** ![t11](https://avatars.discourse-cdn.com/v4/letter/t/8e7dd6/32.png) [@t11](https://onlykey.discourse.group/u/t11)\
**Post date:** [January 3, 2022, 2:14pm UTC](https://onlykey.discourse.group/t/challenge-setting-up-the-onlykey-as-fido2-u2f/582/4 "2022-01-03T14:14:31Z")

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You have to first register security key with the site, when registering a security key the device flashes blue then you press any button to register with the site. After registering, you can log in with the security key.

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**Author:** ![yoga](https://avatars.discourse-cdn.com/v4/letter/y/8baadc/32.png) [@yoga](https://onlykey.discourse.group/u/yoga)\
**Post date:** [January 5, 2022, 11:20pm UTC](https://onlykey.discourse.group/t/challenge-setting-up-the-onlykey-as-fido2-u2f/582/5 "2022-01-05T23:20:19Z")

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Thank you. I got the security key working with using a private browser. Again  
thank you for the support.