Voice Tag
A voice note.
No phone number.
Scan a sticker, leave someone a voice, or put a tag on your car so people can talk to you.
For example
I hit a parked car
Leave a one-time voice on their windshield.
I want people to reach my car
Stick a tag on the bumper. They talk. You hear it later.
Nobody left a number
Say what you need to say. They never get your phone.