For every product you sell, Shopify creates a unique product ID which you can see in the URL of your store admin. It's a long number like 8672415878. You might not recognize the number, but it's how Shopify tracks your products from stock room to delivery.
Littledata's tracking script sends either:
to Google Analytics (GA) for all stages of the shopping journey. This is the number you'll see in product performance reports when you set 'Product SKU' as the primary dimension for the table.
If your store uses variants, we send that name in another field - 'product variant'. To see that you'll need to add a secondary dimension to the table.
You can also access this field 'product variant' in any custom report.
These are all unaffected. You can still track products by name, category and brand if you need to.
And uniquely, Littledata makes this category information available at the checkout and purchase steps as well.