To set up Zaius integration with Shopify, click the Apps tab on your Shopify dashboard and click "Private Apps" in the upper right corner:
Create a private app:
In the App Permissions section, leave everything to its default setting but change "Script tags in your store's theme template files" to have read and write permissions. This is required in order to send web events (e.g., pageviews and product views) from your store to Zaius.
Shopify will provide credentials information which should get copied into the Zaius integration page:
Click "Start Bulk Import", and your shopify integration is ready to go.