When should I click on "I have an account"?
Click on "I have an account" if you have already accessed the "one" app at least once in the past. Please note that it doesn't matter if you have a new smartphone. When you click on "I have an account", you will be asked to enter your login credentials and confirm your telephone number.

Have you changed your telephone number in the meantime as well? Then you first have to reset your account. To do this, sign in at one.viseca.ch with your e-mail address and password and then click on "Reset your account". There you can request a reactivation code to reactivate your "one" account. The reactivation code will be sent to you by post. When you receive it, sign in as usual with your e-mail address and password and then enter the reactivation code.

When should I click on "I'm new here"?
Click on "I'm new here" if you have not yet registered for "one" and are in the process of registering at one.viseca.ch or if you are logged in at one.viseca.ch and want to activate or reactivate the one app. To complete the registration process you will need the registration code, which was sent to you by post. Proceed as follows:

  • Did you receive the registration code? Open the one.viseca.ch website on your computer or tablet. During this process you will be asked to scan a QR code with the "one" app. Click on "Register now". You will be directed to an information screen where you can select "Scan QR code", which will enable you to scan the QR code.
  • Did you not receive a registration code? Open one.viseca.ch and request a new registration code here.
  • Have you lost your registration code or is it no longer valid? You can request a new personal registration code here. Please note: You can request one code within a seven-day period and a maximum of ten codes within 12 months.

I have a new mobile number. How and where can I update my mobile number?
If you can still access your old mobile number or have access to the “one” app, you can make the change in your “one” user account or directly in the “one” app. If you no longer have access to your old mobile number or the “one” app, you must first reset your “one” account. To do this, sign in at one.viseca.ch with your e-mail address and password and click on “Reset your account”. You can then request a reactivation code to reactivate your “one” account. The reactivation code will be sent to you by post. When you receive it, sign in as usual with your e-mail address and password and then enter the reactivation code.

I did not find an answer to my question. What should I do?
Further questions and answers about "one" and the "one" app can be found here.