I would like to create a product that would be available in Shopify\'s storefront but would only be accessible for the shop administrator. Is there anyway to identify if the
Currently there isn't. You could perhaps try inspecting cookies and stuff to see if there's some identifying information that would let you know if the user is an admin, but it would be fragile.
This would also require rendering the items, but hiding them via CSS. Then you'd show them using JS after you've run your checks.
As stated, this would probably be really fragile.