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Install time based OTP tokens capable application. One of the following applications is recommended:
- Browser extensions
  - Chrome
    - Authenticator by authenticator.cc
  - Edge
    - Authenticator: 2FA Client by mymindstorm
  - Firefox
    - Authenticator by mymindstorm
- Android
  - Microsoft Authenticator ( Recommended for Tietoevry users)
  - Google Authenticator
  - Twilio Authy 2-Factor Authentication
  - FreeOTP Authenticator
- iOS
  - Microsoft Authenticator ( Recommended for Tietoevry users)
  - Google Authenticator
  - Twilio Authy by Authy Inc.
  - Authenticator by Matt Rubin
- Windows Windows
  - WinAuth
- Password Managers
  - Bitwarden
  - 1Password
Open the application and scan the QR code displayed
1. Key code may be used in case of inability to scan the QR code. Click on Unable to scan? to get the key.
Enter the one-time code provided by the application and click submit to finish the setup. .
Optionally you can enter device name if asked, for example "My Windows work laptop".
Click Submit.

Info
OTP token is always provided only once. It is either QR code or code visible under Unable to scan? button. In case of the OTP token loss, use TDS OTP token reset functionality available on TDS SSO login page - see OTP token reset/enable section

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in case of device change or application/plugin change for OTP tokens
- Solution - go back to login log in screen and reset OTP token from there - see OTP token reset/enable section
date/time could be out of sync on the device generating one time codes
- Solution - make sure device or application/plugin has time in sync
  - Google Authenticator - tap on hamburger menu (⋮) in the top right corner > Settings > Time correction for codes > Sync now.
if OTP does not work after time sync
- Solution - go back to login log in screen and reset OTP token from there - see OTP token reset/enable section

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