Be reachable on your car without giving out your number.
Anyone who has written their mobile number on a slip of paper and left it on the dashboard knows the trade-off: you solved one problem and created a permanent one.
The problem with a number on the dashboard
A phone number stuck to a windscreen is visible to everyone who passes the car — not just the person who needs it. It cannot be taken back, it cannot be limited to one situation, and once it has been photographed it is out of your hands permanently.
For a lot of people, particularly women and anyone who parks in the same public spot every day, that is a genuine safety concern rather than an inconvenience.
What a QR card changes
- The code identifies the vehicle, not you. There is nothing personal printed on it.
- The person scanning picks a reason from a list and sends it. They never see a number.
- The alert reaches you privately. You decide whether to respond.
- Every scan is logged, so nuisance scanning is visible and can be reported as spam.
- Lost card? Disable it in the app and it stops working immediately.
What the person scanning sees
They see the vehicle and a short list of reasons — blocking, lights on, keys left, damage, emergency, or just a ping. They tap one and it is sent. No name, no number, no address, no account to create.
Privacy questions
Can the person scanning ever see my phone number?
Can they reply to me?
What if I want to call them back?
What stops someone scanning it over and over?
What if my card is stolen or copied?
Everything else your vehicle needs.
Reachable when it matters. Private the rest of the time.
That is the whole idea.