Ships from Germany · 1–2 business days

SilentLink

Everything about the KeyID

Keys lost. Two hours later: a WhatsApp.

That's how one of the first reviews put it — and it's exactly what the KeyID is built for: a tag on your keyring that any finder scans with their phone camera. They write to tell you where your keys are; your address and your name stay invisible. The KeyID isn't available to order right now — but here's everything you need to know about it already.

KeyID · for your keyring Scan ≈ 00:02 min

  • Developed in Germany
  • No app — for both sides
  • No battery, nothing to charge
  • Your address stays invisible

Why the KeyID exists

It started with a bunch of keys at the lost-property office.

Handed in by an honest finder. Collected by no one.

A bunch of keys is the most anonymous thing in your pocket — and that's exactly its problem. Whoever finds it can do nothing: no name, no number, no clue. And you can't change that either, because common sense forbids an address label on your keys. So the finder carries them to the lost-property office, where they sit beside a hundred other bunches that no one ever collects.

Meanwhile you're doing the maths at home: wait it out or change the locks? Front door, letterbox, cellar — and heaven help you if one key belongs to a locking system. And all the while the solution was just one scan away: a finder who wanted to help and had no way to.

Hassle beats good intentions.

The KeyID gives your keys that way: scan, write, return — without them ever revealing where they belong.

„No one can return a key that has no way back.“

— Das SilentLink-Prinzip

The difference

Change the locks. Or wait two hours.

The same keys, slipped from the same jacket pocket — two outcomes, depending on what's on the ring.

Without the KeyID

Days — and costly

  1. 01 You retrace your route home and call the lost-property office
  2. 02 Then the trade-off: wait it out — or play it safe?
  3. 03 Swap the lock cylinders, cut new keys, tell the landlord
  4. 04 The old bunch turns up at the lost-property office a week later

New locks, new costs — and the uneasy feeling stays anyway.

With the KeyID

≈ 2 hrs

  1. 01 The finder scans the tag — no app download, no account
  2. 02 They write where your keys are — with their location
  3. 03 You arrange the handover, the same day

Your keys are back before you've even googled a locksmith.

Whether a bunch of keys comes home is decided by the way to reach you — not the lost-property office.

The technology behind it

Scan. Message. Return.

Three stops lie between the finder and your phone — none of them needs an app, and none reveals which door your key opens.

  1. Step 01

    The scan shows the keys — not you.

    The ordinary phone camera opens a lean page with whatever you've saved: say "4 keys, red fob". The finder knows straight away they've got the right ones — and learns nothing more.

  2. Step 02

    SilentLink relays it — anonymously.

    Their message travels encrypted via servers in Germany and the EU to you. No name, no address, no number goes along the way — your keys stay as anonymous as keys must be.

  3. Step 03

    You arrange the handover.

    The message reaches you via WhatsApp, email or optionally SMS — with the find location as an address and map link. Replies travel back through SilentLink, and if it needs to be quick, the finder can call you directly — relayed through SilentLink, on the Premium plan. That's how you arrange the handover wherever suits you.

Works with any smartphone — the finder needs neither an app nor an account.

Scan ≈ 00:02 min · find location by GPS · address stays invisible

Anonymous on principle

An address label on your keys would be an instruction manual. The KeyID is the opposite.

Keys follow a special rule: the more they reveal about you, the less you can afford to lose them. That's why the classic tag with your name and address rightly stays on the stationer's shelf — and why lost-property offices are full of bunches no one can match to an owner. Until now, reachability and anonymity were mutually exclusive for keys.

The KeyID unties exactly that knot: there's nothing on the tag — no name, no address, not even a city. Whoever scans it reaches you via SilentLink, and you decide what you reveal and where you meet. Your keys become contactable without ever giving away where they belong.

Try it yourself

See the KeyID through a finder's eyes.

Point your phone camera at the code — you'll see exactly the page a finder sees after scanning: the demo bunch with four keys and a red fob, one question, one button. No download, no account.

No second device to hand? Open the demo straight in your browser. And if you'd like to use the platform yourself in the meantime: Create a free QR code to print at home — notification by email, ready in two minutes.

Leads to the KeyID live demo · contact.silentlink.de

Privacy as architecture

Your keys become contactable. Not your home.

Your name, address and number aren't on the tag, not in the QR code and not in the message — they can't surface along the way, because they never travel the route at all.

Finder

Sees only a form

SilentLink

Relays it encrypted

You

WhatsApp · SMS · Email

On the tag
Just a QR code — no name, no address, no number
Keyring profile
Such as the number of keys and fob colour — you decide what the finder sees, and change it anytime in the dashboard
Find location
Only if the finder actively shares it — then as an address with a map link in your message
Transmission
Encrypted, GDPR-compliant
Servers
Germany and the EU
Control
Pause or deactivate the KeyID anytime — the code then leads nowhere

Voices

Already on the keyring.

A few voices from the first months — from verified purchases.

4,9

out of 5 · 7 reviews

5
86 %
4
14 %
3
0 %
2
0 %
1
0 %
  • Für meine Frau bestellt, sie verliert immer Ihre Schlüssel. Super zufrieden

    Husseyin K.

    Verified purchase · July 2026

  • Ich verliere des öfteren mal meinen Schlüssel. Beim nächsten mal bin ich zum Glück gewappnet. Die Registrierung war wie bei allen Produkten kinderleicht.

    Oliver M.

    Verified purchase · March 2026

  • Sehr durchdachtes Produkt!!

    Sehr durchdachtes Produkt. Ich finde vor allem gut, dass man keine App installieren muss und der Finder einfach über den Code Kontakt aufnehmen kann. Für mich deutlich praktischer als viele andere Lösungen. Nutze den KeyGuard jetzt seit ein paar Wochen und empfehle ihn schon im Freundeskreis weiter.

    Florian M.

    Verified purchase · March 2026

  • Positiv Überrascht

    Ich hätte nie gedacht, dass ein Schlüsselanhänger so viel Unterschied machen kann. Der KeyGuard sieht nicht nur hochwertig aus, sondern gibt mir vor allem Sicherheit im Alltag. Zu wissen, dass mein Schlüssel im Verlustfall nicht einfach weg ist, sondern mich jemand kontaktieren kann, ist Gold wert. Kein Schnickschnack, kein Abo – einfach eine smarte Lösung, die funktioniert.

    Niklas T.

    Verified purchase · January 2026

  • Positiv überrascht!

    Der Schlüsselanhänger hat mich positiv überrascht – klein, stylisch und dabei richtig praktisch! Er sieht nicht nur gut aus, sondern ist auch hochwertig verarbeitet und macht sich perfekt am Schlüsselbund.

    Hannah S.

    Verified purchase · June 2025

  • Praktischer Schlüsselanhänger für den Notfall

    Hab den KeyGuard verschenkt und es kam richtig gut an. Ist mal was anderes als Standard-Giveaways. Und im Zweifel echt nützlich.

    Darnell L.

    Verified purchase · June 2025

  • Simpel, aber effektiv

    Ich hab meinen Schlüssel auf dem Heimweg verloren. Zwei Stunden später kam eine WhatsApp von einem Finder. Er hatte einfach den QR-Code gescannt. Ich konnte es kaum glauben. Sowas sollte jeder haben.

    hubert M.

    Verified purchase · June 2025

Understanding, not fine print

The KeyID, explained.

The questions we get asked most — answered the way we'd answer a friend.

What is the KeyID?

The KeyID is a QR tag from SilentLink for your keyring. Whoever finds your keys scans the tag with their ordinary phone camera and writes to you — the message reaches you in seconds via WhatsApp, SMS or email, without the finder ever seeing your name or address. No battery, no app, developed in Germany.

Why not just a tag with a name and address?

Because a key and an address are a bad combination — everyone senses it, which is why classic address tags on keyrings rightly go unused. The KeyID solves the dilemma: the finder reaches you instantly but learns neither who you are nor which door your key opens. You decide what you tell them and where you meet.

What does someone who scans the KeyID see?

A lean page with whatever you've saved — say "4 keys, red fob" — and a single question: what's this about? Write a quick note, send; no ads, no account, no app. You can see the page for yourself in the live demo.

Can I see where my keys were found?

Yes: when sending their message, the finder shares their location with one tap — the find location then appears as an address with a map link right in your notification.

Do I still have to change the locks once I've got my keys back?

That stays your decision — but the situation is a different one: without a way to reach you, all that's left after a loss is uncertainty, and that argues for changing them. With the KeyID the finder often gets in touch within hours, you know where your keys were and that they could never be matched to an address. It's exactly that certainty that usually makes expensive locking-system swaps unnecessary.

What sets the KeyID apart from the RescueID?

The KeyID hangs on your keyring and brings lost things back. The RescueID comes as a wristband or pendant and is made for emergencies: through it, helpers reach your family. Same technology, different jobs — both run on the same account.

What does the KeyID cost — and what comes after?

Like every SilentLink ID, the KeyID costs a one-off €24.99. After that the Starter plan is free forever, including WhatsApp notifications; Premium (€19.99/year or €2.49/month) is optional — all the details in the plan comparison. One plan covers all your IDs, from your keyring to your car.

When will the KeyID be available?

The KeyID isn't available to order right now. If you want one, drop us a line — we'll let you know as soon as it's available again. Until then you can try the platform with the free QR code; the DriveID and TravelID are available as usual.

Who's behind the KeyID?

SilentLink — a German company from Wuppertal that builds contact points for car, luggage, pet, keys and emergencies. Designed and manufactured in Germany; all products share one account, one dashboard and one plan.

The next step

The KeyID is coming to your keyring. You'll be the first to know.

Drop us a line to say you want one — we'll be in touch as soon as it's back. And the live demo already shows you today what a finder sees when they're holding your keys.