Letter with ID check and contract signing
Contact signing & electronic ID copy

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With our identification and contract solutions, we take over the task of obtaining contract signing or electronic copy of ID documents on your behalf. The high-quality processes satisfy the guidelines of the Swiss Financial Market Supervisory Authority, the Telecommunications Law and the Anti Money Laundering Act.

  • Identification and contract signing at your front door 
  •  Electronic processes 
  • Minimum effort for your customers

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Service and features

Swiss Post’s identification and contract solutions for processes at the front door are made up of the following products:

  • Letter with ID check (LID), enabling you to obtain an electronic copy of an ID document.
  • Letter with ID check and contract signing (LID-CS), whereby a contract is presented for signing.

You receive an electronic copy of an ID document from your customer without them having to leave the comfort of their home – and/or you receive a physical signature from the customer on the actual contract itself.

Who is this service for? Preconditions

Letter with ID check and contract signing is a service that is only available to business customers with a billing relationship.

With the Letter with ID check and contract signing service, you simplify and optimize customer acquisition. You record your customer data via the call center or using the digital onboarding process. Swiss Post takes over the task of obtaining the contract signature or electronic copy of the ID document on your behalf. The data is transferred back to you through the “DataTransfer” interface. Thanks to automatic Track & Trace, you have your consignments under control at all times.

The Letter with ID check service is suitable for example for

  • Business processes that are subject to the Anti Money Laundering Act (e.g. identification of customers for life insurance policies); 
  • New mobile prepaid customer identification.

The Letter with ID check and contract signing service is suitable for mailing contracts

Personal identification and contract signing is only available to private individuals.


Letter with ID check (LID)


Letter with ID check and contract signing (LID-CS)


All prices in CHF, incl. VAT

Important information

The following ID documents are accepted for the identification process: 

  • Passport 
  • Identity card 
  • Foreigner’s residency permit

Here’s how it works

  1. 1

    Get in touch with us, either through your Swiss Post customer advisor or via Product Support.

  2. 2

    We will provide you with more information about the procedure in a consultation.

  3. 3

    Arrange the connection to the electronic “DataTransfer” interface and the “Track consignments” web service with your IT officer.

  4. 4

    Using the guidelines for designing Letters with contract signing and Letters with ID check, create a sample copy of the address label sheet to submit to our “final proof” specialists.

  5. 5

    Produce test consignments and carry out a test run once you have received our approval.

  6. 6

    After a successful test run, the service will be available to you and your customers.

Letter with ID check and contract signing
We would be pleased to provide you with personalized advice

Give us a call

Monday to Friday:
8 a.m. – 6 p.m.

CHF 0.08/min. from
landline phones
within Switzerland

+41 848 000 025

+41 848 000 025

Write to us

Send your query directly to our specialists online.

For the deaf

For the deaf or hard of hearing

Our address

Post CH Ltd
Customer Service
Wankdorfallee 4
3030 Berne

Practical information for letters with barcode

Resources for consignments with barcode
Support for preparing consignments correctly

Find out more

Barcodes and labels
Order options for business customers

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“Barcode” web service
Obtain barcodes directly from your own company system

Find out more

“Track consignments” web service
Integration of Track & Trace into company systems

Find out more