Legal, opt-in only. No phone-number lookup. No call history. Send the sharer link to friends — each enters their name and taps Start sharing. You watch them one-by-one on the viewer link. Auto-expires in 15 minutes.
Viewer (you):
Generic sharer link (friend types their own name):
Both links expire in 15 min. Friend can stop anytime.
Named invites (you set the name)
Type a name, create a personal link, send it to that person. They still see a clear consent screen showing their name + live GPS before sharing.