In cooperation with
Swiss Post since 1982

Keys are lost and found again every day!

With the BIK (Benutzer Iden­ti­fi­ka­ti­ons Kode) key tag, lost keys are returned to their owner at no extra cost!

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Found keys?
Change of address

The ideal gift for people in love

Is there a more symbolic moment in a relationship than sharing your keys with each other?

Hardly. Which is why that special moment deserves to be remembered forever.

The perfect gift to celebrate the moment you move in together.

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How the BIK key finder works

To return found keys to their owner they simply need to be registered – we take care of the rest.

If you have a BIK tag on your keyring, you never have to worry about losing your keys again. The finder drops the keyring into the nearest post box. Swiss Post forwards it to us and we return it to you immediately.

The keys are gone

It can happen to anyone.
Thousands of keys are lost every year. This is of course very annoying: a sense of insecurity sets in and costs are looming.

Someone finds your keys

We make it easy for the finder. They read the text on the BIK tag and know immediately what to do …

The keyring
 
is dropped unwrapped into the nearest post box by the finder. Swiss Post sends the keys to BIK. BIK identifies your contact details using the embossed code.
They are da
 
BIK sends your keys back to you by post. Our success rate is approximately 95 %. And our service works both in Switzerland and abroad.

Keys are lost every day…

and it can happen to anyone. After losing a keyring, often not only do the keys have to be replaced, but several lock cylinders have to be changed and expensive car keys reordered. Replacing it all costs time and a great deal of money.

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  • Over 250,000 – you can rely on us
  • Every day keys come back from Switzerland and abroad
  • You are informed immediately and the keys are returned at no extra cost
  • Save hundreds to thousands of francs

The key is back!

Finders contact us directly on our website or drop the keyring into the nearest post box.
 
We notify you by phone, by SMS or by email and either put you in touch with the finder or send your keys back to you immediately and free of charge.
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It is very simple:

  1. Order your BIK key tag online
  2. You receive your tags after ordering, each with an individual number linked to your address at BIK
  3. Attach the tag to your keyring. You can also use it to release shopping trolleys
  4. If your keyring is lost, you are notified immediately and get it back either directly from the finder or free of charge from BIK by post
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Every BIK tag releases shopping trolleys directly without coins!

BIK Anhänger einschieben, drücken

Insert BIK tag, press

Kette löst sich, Anhänger wegnehmen

The chain releases, remove the tag

Einkaufen ohne Münzen

Shopping without coins

Bei manchen schräg einführen, rausziehen

On some, insert at an angle and pull out

Feedback from happy customers

Many thanks!
Une bonne surprise!
Greetings from Geneva

Doris P.

Many thanks for the keys!  Thank you for the wonderful key service. I am as happy again as the cat!

Hans M.

Good day!
With great joy and relief I found my lost keys in my letterbox.
Many thanks for the prompt service – I will gladly recommend you!

Hanna F.

What a wonderful surprise: yesterday my house key was delivered by post, only a week after I lost it.
Great service 🙂
Many thanks!!!

Susanne B.

I was delighted to get back today the key I lost last November. I am very grateful, because I had already given up hope.

Ulrich J.

I have had the BIK key tag for 28 years and I am certainly not giving it up! It has already saved me 3 times and brought my keyring back to me. The first time, I was very worried about whether I would ever get it back. What a relief when it was back with me a few days later. Otherwise it would have been very expensive and a great deal of hassle. By the third time I knew I would reliably get it back through BIK. And so it was. Many thanks indeed!

Toni F.

The shock was enormous when, after coming home, I realised my keyring was no longer in my bag. It must have fallen out of my pocket while unlocking my bike.
I have owned the BIK tag for more than 25 years and had never needed it. All the greater was my joy when I found my keys in my letterbox a few days later!!! Paying the fees has more than paid off for me!
Many thanks for the wonderful service.

Karin M.

What a surprise and what great joy! After 8 days of searching and asking in shops in vain whether anyone had found a keyring, it came back by post after all! Many thanks to the finder and to the BIK key finding service for sending it so quickly!

Maya H.

Lost my keys a week ago on Sunday, between Winterthur and Embrach. A little carelessly kept in my jacket pocket, and the jacket was not always on me!!! Oh well! I am overjoyed – many thanks and warm regards.

H.B.

I was out all day – bike, train, postbus, visiting friends, and all the way back again…
In the evening I missed my house key. I walked back through the snow to the station – nothing.
I phoned the postbus service and reported the loss to the SBB, without success. Two days later the key was in my letterbox!

T.E.

Fantastic. After 1 1/2 years my key is back following a theft.
Many thanks.

S.H.

The key I lost about 10 days ago reached you thanks to the BIK tag. It is wonderful that the finder dropped the key into a post box. That brings real joy. One is always a little uneasy. Many thanks to the BIK key finding service for the quick SMS notification and for delivering the key by registered post. I wish you all the best.

Bernhard W.

Today I was able to collect my keys, lost somewhere in the Jura or on the train.
Many thanks for the perfect service. For people like me, who tend to lose their keys, this service is simply brilliant!

Herbert K.

I am absolutely delighted to have my keys back. I have no idea where I lost them, but after 4 weeks I had already given up hope. The service is superb – thank you, and thanks to the finder too!

Edith B.

Many thanks for returning my lost keyring so quickly and easily.

Paul

Thank you very much indeed for returning my key.I am fairly sure I lost it in the shopping centre. But I cannot say exactly – only that I had no luck asking at the three places I visited that afternoon.Although it took about three weeks for your delivery to arrive, I never gave up hope. I am so convinced by your service that I have told others about it too.

Martha

Many thanks for the return. The subscription has been worth it for me.

L.S.

The keyring lost since August 2023 was recently found and could be returned to us thanks to the BIK subscription tag!
We no longer believed the keys would turn up again. Here is the proof that the service works flawlessly wherever it can. Many thanks indeed.

M.H.

As I said to my family yesterday when I got your call, it is the best investment I have ever made. :-)))
I am very satisfied and will recommend you to others.

M.L.

Good evening,

Somehow my keyring fell out of my bike shirt around the station area, either while paying or somewhere on the grounds  ?  . Despite asking afterwards at the postbus office, the lost property office, around the grounds, on the street and so on, it was not found. That said, the shock of losing it was not extreme. Trusting the details on your return tag, I was less worried. To my delight, my hope was fulfilled by your key finding service before too long. I can only recommend your company. Every success to you.

Peter U.

Thank you very much for returning my keys, which I left hanging on the shopping trolley at our Coop in Ettingen. Thanks to the BIK key tag, the keys were safely delivered back to my home by post.

Annelies Z.

My story:
I was staying in Davos, where I last saw my keyring in the side pocket of my rucksack. When I arrived at the other end, in the yoga room, I realised the keyring was missing. Secretly I waited for someone to ask whether anybody was missing keys. On the way home I watched the path carefully. The next day, the same route, the same yoga room.
I travelled home without my keyring. Straight to my daughter, who has a key to my flat. At least that way I could get inside.
Above all I prayed that someone had found the keyring and would drop it into a post box.

I went into town, to the city police, but could not find them. I went to the police at the station – by appointment only, closed. Back to my daughter to report it all. My mobile was out of service, so my daughter dialled the police on her phone and I was able to sort a few things out.
On Monday I went to my daughter again. (Still without my own mobile, without a computer, without a landline.) She sorted a few things out with the Davos lost property office. All I could do was pray. (A few thoughts) for example: only carry my own key from now on, and not three KABA keys on the ring.
Then one fine day the doorbell rang: the postwoman. Registered post. Keys. I said: “you are an angel”.

Verena T.

I am so grateful to have got my keys back in less than a week. Great service, thank you!

Heidi H.

My story:
Rucksack lost/stolen on a train in April 2024. I only noticed the loss once I was off the train. I contacted the railway immediately by phone. They informed the train attendant on duty, but my rucksack was no longer at the seat where we had been sitting. Contents: keyring, 2 children’s magazines, an iPhone charger and an expensive Swiss army knife. Unfortunately only the keyring came back. Never mind – I have already replaced everything else. Thanks to the finder for returning the keys and to BIK for your services.

Susanne B.

A huge weight has been lifted off my mind. Many thanks for the speedy delivery.

Verena B.

Dear key team

Many thanks for sending my keyring back – that was  d i e

SURPRISE! After such a long time.

Unfortunately we had already had to get new keys, but we would be

very much like to know where it was found, so that we can thank them properly.

Once again  THANK YOU  and all the best.

Emilie W.

Dear «BIKS»

Thank you very much for sending the replacement BIK key tags so quickly. There is no other bill I pay more willingly than this one.

You have done me a great service several times already. With many regards,

Gertrud

For over 30 years I have carried the BIK tag on my keyring and had never been able to find out whether the service really works – until last week, when I lost my key on the train. After only 7 days it was back with me – what a great service!

Thanks to the unknown finder and to BIK!

Fredi

A very warm thank you for this unexpected surprise! The keyring was left in a fleece jacket on 1 July and forgotten on the train. I had already written the keys off and was about to inform the building management. Many, many thanks again!

Luigi

Many thanks for returning my lost key so incredibly quickly.
I would of course also like to thank the person who found the key and posted it. If you have any details about the finder, I would be glad to receive them, so that I can thank them personally as well.

Luki

Many thanks for returning my key.

Anonymous

Many thanks! I am absolutely delighted.

Ruth

I have been a BIK member since the 1990s, with a few short breaks. A few days ago I left my keyring, with a KABA500 key, stuck in a shopping trolley. I use it instead of a coin 🙂 That was the first time I actually needed and used the service. It was worth it, because replacing all the keys and the badge would have been very expensive and time consuming. I was delighted by the notice from the post office about a registered letter, when I saw BIK as the sender. Thank you for existing.

Norbert

Dear BIK customer service team
I would like to thank you once again for the excellent service.

R.L.

Many thanks for sending back my lost keyring. I am very grateful that someone found it and passed it on to you. It is a good feeling when a lost item is back with you. As I do not know exactly where I lost the keyring, I cannot really tell a story about it. Kind regards, Margrit

Margrit

Many thanks for your perfectly working service!

H.J.

Dear BIK team
Many thanks for delivering my lost key!
I was absolutely delighted.
Top service. Thank you!

Catarina

Good day

Only recently we wondered whether we should still keep your tags on our keys – we cannot remember ever paying anything in recent years, we could not find anything in writing about it, and an internet search did not turn up the information we wanted either.

Then a few days ago we lost our house key during a trip to Bern. So silly, so annoying and frustrating.

But to our great surprise and delight, just a few days later we found an envelope from you in our letterbox. Contents: our house key!!

We are very glad about it and thank you warmly for your service.

And now we assume that we are still registered with you and that in due course we will receive an invoice again. 🙂

Until then, with kind regards.

Ch. & H.

I am absolutely delighted to have my lost house key back.
A warm thank you to the finder, whoever they may be!
Bruno

Bruno

Many thanks indeed, that worked brilliantly! I had a few anxious days, because my subscription feels old, I lost the key on the Saturday, and I had also moved house. Thank goodness! And thanks to BIK, no lock cylinder change for me!

Mark

Message:
I think the service is superb!!!!
It arrived quickly.

Many thanks to you – what a relief.

O.N.

First of all, a thousand thanks for my keys!!! For the very first time I had put the keyring on the roof of the car, because I thought nobody else would need the car that day. That was not the case. The car and the driver arrived home safely, but without the keys on the roof… I thought there was no point searching, but my husband insisted on going back along the route to look. My friend and I prayed and thanked God that the keys would be delivered to me. And on the Thursday I was expecting the keys, but I was in the garden when the postman came. A little later my husband came in, overjoyed, with the delivery we had been waiting for. Miracles still happen today. I am so happy and thank you and the whole TEAM most warmly. Because God needed you. With very warm regards.

Bernadette

My son lost his house key on 8 June 2026. A week later we already had a message that the key had been found. I am very satisfied with the service and the handling by BIK AG. The very next day the key arrived home by registered post.
I can only recommend the BIK key finding tag. Many thanks! 🙂

M.S.

Thank you, thank you – I am so glad.

Heidi
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Happy to have your keys back?

Send us your feedback – what was your „key experience“?

Your own key story?

Send it to us!

Only with us is everything included:

  • Addresses are regularly, brought up to date using the original address list of Swiss Post –  please be sure to notify us if you move and/or change your name
  • No extra costs for return postage or change of address. Transferable free of charge
  • Free replacement tag if lost
  • Extremely durable tag made of nickel silver, tested over decades
  • Tag releases shopping trolleys
Order now

Do you still have questions?

You will find answers in our “Frequently Asked Questions” or via direct contact:
info@bik-ag.ch
Tel. +41 31 312 11 70  or  Tel. +41 41 555 87 87

Questions & Answers