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So i can see my use case like this: I ssh from my phone to my home raspberry pi through tailscale. i type an alias that causes the RPi to run bitbang serve and prints the connection number through stdout so i see it on my phone ssh session.

Now on an untrusted PC i can bingbang into my home network, do stuff with a real keyboard, and then run another command to shutdown bitbang.

Does that sound feasible?

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Yes, that should work. "serve" prints the URL and the 6-digit pairing code to stdout, so your ssh session sees them, and shutting it down is just killing the process.

One suggestion for the untrusted-PC part: bitbang serve -ephemeral. That uses a throwaway identity that dies with the process, so the URL is dead the moment you kill it -- rather than persisting and still working later from whatever browser history it's sitting in. --pin adds a second factor if you want one.

The pairing code is possibly handy too. If you'd rather not type a long URL on an unfamiliar machine, go to bitba.ng, enter the 6-digit code, and confirm the number it shows you back on the Pi.

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