The link was printed as text next to an adb command, so enrolling a phone
meant getting a 200-character string from one device onto another —
which is the step that goes wrong, and it does not have to happen at all.
The app registers the echolot:// scheme, so on the phone being enrolled
following the link is the entire procedure.
The raw string and the adb form stay for every other case: reading it on
a laptop, or enrolling a device that is not the one holding the browser.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>