3 min read · 16 October 2026

Phone number on the windscreen, or a QR sticker? A privacy comparison

Many drivers leave a phone number on the dashboard or windscreen so anyone they block can call them. It works, but it has trade-offs worth knowing about.

What a visible number means

• Anyone who walks past can read and save it, including people you would never want to hear from.
• The number can end up on spam and marketing lists, or be misused to make unwanted calls.
• You cannot take it back once it is printed or written and photographed.
• If your number changes, the sticker or card is out of date.

What a QR sticker does differently

A QR sticker holds a link, not your number. When someone scans it, they land on a page where they can send you a message or start a call through the app. You are notified and can answer, and the other person never sees your number.

• You choose how you are reached, by message or call.
• You can update your details without replacing the sticker.
• Even if someone photographs the sticker, they only get the same contact page, not your number.

Things to keep in mind

• A QR sticker needs a phone with a camera and internet. Most people have both, but a printed fallback is not possible without exposing the number.
• You need to keep notifications on so you notice messages and calls.
• Use a clear, undamaged sticker so it scans easily, and place it where it is visible from outside.

Which is better?

If privacy matters to you, a QR sticker is the better balance: people can still reach you quickly, and your number stays yours. You can try how it feels from a finder's side with the live demo.