Looks to be a great proof of concept. No, running a standalone executable alongside the browser is not the way you'd want to do WebUSB. But it's great to see someone working on it.
No thanks. I'll accept it in my browser when they fix the security implications this raises, and when the Spec is no longer in draft.
Can't Mozilla hand over Firefox to another team?
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I recently flashed GrapheneOS on a Pixel for a friend. I was very surprised that you can do this entire process from the browser using WebUSB - the only downside being that it required me to launch Chromium.