On a Mac, open Terminal and paste:
curl -fsSL https://get.tinker.dog/chrome | bash
It installs three small tools into ~/.local/bin (no sudo), opens a
separate Chrome with its own empty profile, asks for the token you were given,
and keeps a bridge running in that Terminal window. Your own Chrome profile is never
touched. Ctrl-C stops it; run ~/.local/bin/tinker-chrome to start it again.
Read the script before running it.