[pickettd]

I think there are certain stores that routinely report itemised info. I just posted this link in another comment thread but check out the https://www.visa.com/supplierlocator/ search results for the column 'Enhanced Data Level'.

If you search for the Safeway grocery store at 14444 124th Ave NE Kirkland WA 98034 - the data level cell contains 'Level III Line Item'. I believe this means that at least for Visa, that store is using level 3 credit card processing and line item receipts are reported to Visa.

[narrowrail]

If you go to Walmart, you will notice when checking out that each item scrolls across the Ingenico POS. I believe they use FirstData (formerly part of AmEx, now privately held by KKR) for their merchant acquirer which is receiving this SKU data. FD used to offer services to the CPG industry using this data.