Does White Christmas work on Shopify POS (Point of Sale)?
Unfortunately, White Christmas is not compatible with the Shopify Point of Sale (POS) system.
The POS platform is very different from the standard Shopify platform, which makes all code incompatible. Shopify POS apps have to be coded from scratch for that platform.
You can find all Shopify POS apps at https://apps.shopify.com/collections/shopify-pos-apps