# Calyxos and grapheneos support

**URL:** <https://onlykey.discourse.group/t/calyxos-and-grapheneos-support/609>\
**Category:** Mobile Support\
**Created:** [January 25, 2022, 3:53pm UTC](https://onlykey.discourse.group/t/calyxos-and-grapheneos-support/609 "2022-01-25T15:53:58Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Chaser](https://avatars.discourse-cdn.com/v4/letter/c/f17d59/32.png) [@Chaser](https://onlykey.discourse.group/u/Chaser)\
**Post date:** [January 25, 2022, 3:53pm UTC](https://onlykey.discourse.group/t/calyxos-and-grapheneos-support/609/1 "2022-01-25T15:53:58Z")

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With the amount of people starting to move to degoogled phones, calyx and graphene, is it possible to get TOTP working for them?

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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 25, 2022, 4:29pm UTC](https://onlykey.discourse.group/t/calyxos-and-grapheneos-support/609/2 "2022-01-25T16:29:57Z")

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There is a user answer here. It seems the OS does not have requirements to support webauthn/FIDO2 which is required for TOTP.

> [@Apps.crp.to doesn't work with Android Chrome/Firefox running custom ROM CalyxOS](https://onlykey.discourse.group/t/apps-crp-to-doesnt-work-with-android-chrome-firefox-running-custom-rom-calyxos/212/6):
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> I believe you need Google Play Service in order to get WebAuthn to work on Android.

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**Author:** ![Chaser](https://avatars.discourse-cdn.com/v4/letter/c/f17d59/32.png) [@Chaser](https://onlykey.discourse.group/u/Chaser)\
**Post date:** [January 25, 2022, 4:41pm UTC](https://onlykey.discourse.group/t/calyxos-and-grapheneos-support/609/3 "2022-01-25T16:41:07Z")

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Other TOTP and webauth apps and services work just fine. How do they work then? I’m also posting the same questions to the OS devs. Also found this [WebAuthn/FIDO2 | Hardware Security SDK](https://hwsecurity.dev/fido2/) So it can be done without google services. Just need to find out if it’s the OS that needs modification or the app

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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 25, 2022, 6:21pm UTC](https://onlykey.discourse.group/t/calyxos-and-grapheneos-support/609/4 "2022-01-25T18:21:05Z")

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There is no OnlyKey app, it would be the OS that needs to support USB FIDO2 security keys.

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**Author:** ![Chaser](https://avatars.discourse-cdn.com/v4/letter/c/f17d59/32.png) [@Chaser](https://onlykey.discourse.group/u/Chaser)\
**Post date:** [January 25, 2022, 9:11pm UTC](https://onlykey.discourse.group/t/calyxos-and-grapheneos-support/609/5 "2022-01-25T21:11:59Z")

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The apps.crp.to is what sets the time right?

I just confirmed it’s your apps.crp.to that requires google play services. Unfortunate but I’ll use bitwarden as a workaround for TOTP.

Sounds like microg is the people to talk  
To thank you.