Shopify POS: Install the Marsello "Scan, redeem loyalty rewards" app extension
How to add customers to the sale and access their loyalty profile to redeem loyalty rewards and email discounts… Add the Marsello: Scan, redeem loyalty rewards app extension tile to your Shopify POS sales screen… Easily add new customers in-store through your Shopify POS sale screen using the Marsello: Scan & Redeem