Most children under eight cannot remember an 11-digit phone number.
They can remember three words.
If your child is ever lost, three words are all they need to remember.
The adult who finds them types those words and your child’s first name into this site, then leaves their own name and number. Every contact you have listed gets a text within seconds — and the finder is told nothing about you at all.
Free, always. Takes about two minutes.
How it works
A phrase for your family, and a way for a stranger to use it.
ThreeSafe is free for families in the UK. There is no app, no tag and nothing to switch on. It is built for children of about four to nine — old enough to say three words, too young to recall a phone number.
- 1
You get three words
Assigned to your family, not chosen, and yours for good. Each word comes with a picture, so a child who cannot read yet can still read their own card.
- 2
Your child learns them
Like a nursery rhyme, with a silly sentence you write yourself. Most families get there in a week of car journeys.
- 3
A stranger reaches you
They ask your child’s first name, type both in here, and leave their own name and number. Every contact you listed gets a text and an email.
See it for yourself
Step three, from the other side
This is the real screen a stranger sees, filled in already with an example phrase that belongs to no family. Nothing here is sent anywhere. Work through it and you will see exactly how little the finder is ever told.
Look up a child’s family
ExampleAn example only. These boxes are fixed, and no lookup is made.
Find their familyStart again
Step 1 — What the finder is told
Family confirmed.
We can reach someone who looks after this child. Tell us where you are.
That is the entire response. Not a name, not a number, not even whether the family is one street away or two hundred miles.
Step 2 — What the finder gives us
Where are you?
Brighton Palace Pier, by the big wheel
Your name
Sam Whitfield
Your role
Member of staff
Your mobile number
07700 900461
☑ I understand my name and number will be shared with the family.
The details flow one way. The finder gives theirs, and gets none back.
Step 3 — What the family receives
Name confirmed
Someone has used your family words
- Where
- Brighton Palace Pier, by the big wheel
- Who found them
- Sam Whitfield — Member of staff
Call 07700 900461
Every contact you have listed gets a text and an email straight away. Both carry a link, and the link opens this.
Step 4 — And that is all of it
You know who has your child and where. They never learned who you are.
The words never point back to you. They are enough to reach your family and never enough to identify it. That single rule is the whole design, and it is why this is not a tracker.
Trust
What the words can do, and what they can never reveal.
“But what if a stranger knows the words?”
- The words alone do nothing. A lookup also needs the child’s first name.
- Knowing the words never reveals your name, your number, your address or your children.
- Every lookup is logged, and the person looking up must give their own name and number.
- Someone who is genuinely with your child can already ask them their name. What this stops is the person who got hold of the words without the child.
- The first instruction everywhere, including on the finder’s own screen, is to find a member of staff.
We never track your child.
No location, no device, no tag. This is not that kind of product.
We never store your child’s details.
No name we can read, no age, no photo. Just a one-way check.
We never give out your number.
The person who finds your child gives us theirs, not the other way around.
We never sell anything about you.
Families are free because venues pay, not because you are the product.
Get started
Teaching it takes five minutes
Our family words
An otter guarded a castle with a lemon.
Written by a parent, and shown here with an example phrase.
- 1Your words come with pictures, so they work before your child can read.
- 2Make up a silly sentence with all three. “An otter guarded a castle with a lemon.”
- 3Ask them in the car. That’s the whole practice routine.
Three words they can remember when everything else goes wrong.
Free, always. Takes about two minutes.
For venues and schools
How long does it currently take your staff to reunite a lost child with their family?
ThreeSafe gives your staff one screen. Every lookup is timestamped and logged, so if you ever need to reconstruct what happened, the record exists — not just your team’s memory of it. It sits alongside your own procedure and does not replace any part of it.
Status
Where this is up to
Last updated 2 September 2026.
ThreeSafe is live. The words, the lookup and the alert are built and working, and we have taught real children their three words — some recalled them correctly days later, away from home with family.
Tested: the lookup, the alert to every contact, the wording, and early recall with real children — the words held up days later, which is the whole bet this product makes.
Not yet: a busy event, a crowd, poor signal, and recall at scale across many children over many weeks — the evidence so far is early and real, not yet a formal study.
If you register now, you get your words and your printable card today. We are looking for a small number of venues and schools to pilot with — get in touch if that is you.