Have you heard about WebAuthn? Have you heard a Web development video in Japanese🇯🇵?
If not, you can kill two birds with one stone! @agektmr helps you build your first WebAutn app in this video (with English subtitles!)
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https://www.youtube.com/watch?v=8ren54IMSf4

https://twitter.com/ChromiumDev/status/1380209805969797120