On the same device (All-In-One), it is possible to activate the payment terminal app directly from the POS system by providing the activation details from the Viva portal. You can find these details as follows:

Log in to the viva.com portal

Go to Settings → API Credentials

Copy the Client ID

Create a Secret key and copy it.

The Secret is shown only once. All previously active secrets will stop working when you create a new one.

Send the credentials to customer support by email.

After this, activating a new terminal is done by selecting Activation in the settings menu of the Solmio POS application → the Viva terminal view opens, and you can configure the terminal-specific settings.