QR Code Instead of Phone Number: Safer Kids' Contact Exchange

It was a perfectly ordinary Tuesday afternoon when my daughter came home and said: "Dad, I gave Lisa my phone number." She meant my number, of course — she doesn't have her own. But Lisa had the number now, and Lisa's parents probably knew about it just as little as I did.

That was the moment I realized: This can't go on like this.

The Problem with Phone Numbers

Children in primary school start making their own contacts. They meet a kid at the playground, become friends at after-school care, or meet someone at a birthday party. And what do they do? They exchange their parents' phone numbers — because they don't have their own.

It sounds harmless, but it creates several problems:

Only One Side Gets Informed

When my daughter gives out my number, the other family knows — but I don't. I only find out when a call from an unknown number comes in. And sometimes I never find out at all, because the other child loses the number or is too shy to call.

No Control for Either Set of Parents

In our family, there are two of us. If only my number gets shared, my wife is left out of the loop. Same for the other family: Maybe the number reaches the father, who's working in the afternoon and never passes the request along.

Privacy Concerns

A phone number is personal information. Especially with children who can't yet assess who they're sharing data with, this is a sensitive issue. A phone number on a crumpled piece of paper in a backpack is not ideal.

The Idea: A QR Code as a Play Card

What if children could hand over something safer than a phone number — something that involves both families? That's exactly the question that led to the development of play cards on spielmit.eu.

The concept is simple: Each child gets a personal card with a QR code. The card can be printed and handed out — to new playmates, at birthday parties, or on the playground.

How It Works

Print the card — In the child profile on spielmit.eu, there's a print-ready play card with QR code, emoji avatar, and first name
Hand it out — Your child gives the card to another child or to their parents
Scan the QR code — The other family scans the code with their smartphone
Create the connection — On the page, they select their own child and establish the connection
Done — Both children now appear in each other's family's playmate finder

Why This Is Better Than a Phone Number

Both parents are informed: The connection runs through the family profile — Mom and Dad both see it
No private numbers needed: Families can communicate through the platform without exchanging phone numbers
Parents stay in control: Only registered families can use the code — no anonymous access
One code per child: Each child has their own code. If a code is invalidated, existing connections remain

Practical Tips for the Play Card

When to Hand It Out?

First day of school or daycare: Put the card in the backpack — if your child makes new contacts, they'll have the card handy
Birthday parties: Instead of party bags — or as an addition to them
Playground visits: For spontaneous contacts that would otherwise be lost
After-school care: When children form afternoon friendships that should continue outside of care

How to Explain It?

You can explain it to children simply: "If you meet someone who wants to play with you, give them the card. Their parents can scan the code and we can set up a playdate."

To other parents, you can describe it like this: "This is a play card with a QR code. If you scan it, we can connect through the platform and coordinate playdates — without having to exchange phone numbers."

What Happens After the Scan

When the other family scans the QR code, they land on a page showing your child's name and emoji avatar. There they can:

Register (if they haven't already) — free in two minutes
Select their own child
Create the connection

After that, both children appear in each other's family's playmate finder. You can see the other child's availability and suggest a playdate directly.

No back-and-forth messaging. No lost piece of paper. No "I can't remember which number that was."

Back to That Tuesday Afternoon

By the way: The story with my daughter and Lisa's phone number turned out fine. Lisa's mother called, we had a nice chat, and the two girls actually got together for a playdate. But it could have gone differently — and next time, my daughter will have a play card with her.

If you'd like to try the play card for your child: Check out the step-by-step guide or go straight to the FAQ for details about the QR code system.