android – WebAuthN with cellular system – the cellular system is disappeared from Chrome

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We have arrange WebAuthN authentication in a Keycloak occasion, and every thing appears to be working tremendous. My colleagues and I’ve arrange our WebAuthN credentials, and most of us use our cell phones (Android or iOS) as our main credential, however every certainly one of us has a YubiKey as a backup.

In my Chrome browser, I’m given the choice to select from my WebAuthN credentials, and if I select any, there’s a “Strive one other method” button to modify to a distinct credential.

Chrome's WebAuthN pop-up in my browsser
Chrome's WebAuthN pop-up in my browsser

Nevertheless, in my colleague’s Chrome, the “Strive one other method” button is just not current, and he can’t select between the totally different WebAuthN gadgets. He was capable of arrange his cellphone on Friday with the identical browser and the identical cellphone. But in the present day, his cellphone is just not proven as an possibility:

Chrome's WebAuthN pop-up for my colleague

Do you’ve any thought how we are able to debug this? How does Chrome select which choices to indicate and which of them to cover? He’s logged into his Chrome to his Google Account, as he was final Friday.

Regards,