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Stop Treating Phone Numbers As A Digital ID
(notthesolution.substack.com)
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this post was submitted on 20 Jan 2025
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I'm sad PGP didn't become a popular way to log into websites. A challenge-response protocol could have even been built into web browsers. Big tech is reinventing that idea as Passkey, but with a very big tech flavor.
I mean, passkeys are... sort of... PGP... 🤷♂️
I'm already hearing about restrictions on exporting passkeys and some apps requiring that you're not running a custom ROM on Android and stuff like that. Makes me worried they're going to fuck that up and make it restrictive bs
Passkeys or WebAuthn are an open web standard, and the implementation is flexible. An authenticator can be implemented in software, with a hardware system integrated into the client device, or off-device.
Exportability/portability of the passkey is up to the authenticator. Bitwarden already exports them, and other authenticators likely do, too.
WebAuthn relying parties (ie, web applications) make trust decisions by specifying characteristics of eligible authenticators & authentication responses & by checking data reported in the responses. Those decisions are left to the relying party's discretion. I could imagine locked-down workplace environments allowing only company-approved configurations connect to internal systems.
WebAuthn has no bearing on whether an app runs on a custom platform: that's entirely on the developer & platform capabilities to reveal customization.