OTP/MAC Keys are a security feature used in online banking to protect transactions and enhance account security. In general, you will be getting OTP code via application installed on your mobile device that is required to log into online banking or approve payments. To enable this functionality, follow these steps:
1. Log in to your online banking account.
2. Click the three dots in the top-right corner and select "Settings."
3. Choose "OTP/MAC Keys" from the options.
4. Follow the on-screen manual, which will guide you through the setup process.
5. Once your MAC key is imported, the 2FA will switch to the OTP/MAC method automatically, without a need to contact support team.