Attach Receipts to Credit Card Transactions

I work in the area. In the EMV specification the receipt content is already saved electronically and is somewhat standardized, see, for example https://www.mastercard.us/content/dam/mccom/global/documents/transaction-processing-rules.pdf. What is missing is for the consumers and point-of-sale owners to be able to access it easily. The receipt does not identify the product sold, by the way, but enough details to verify the transaction's occurrence.

Of course, if your chipped card is stolen and pinless tap is supported for small purchases, no transaction verification helps you to avoid fraudulent charges. And if someone has your card and knows your pin (which still can be skimmed with card skimmers), then you are likely on the hook for all transactions up until you report your card stolen.

This used to be common, called "country club billing". most credit cards stopped it in the 70s, American Express continued it through part of the 90s. It's expensive for merchants and card processors, not valued by most customers, and as far as I know nobody is seriously considering bringing it back.

The various contradictory incentives about data privacy and who knows what when are all trivial compared to the amount of work it'd take, for no significant value to customers. The number of humans who bother to keep and categorize receipts is TINY, and it's probably correlated with not spending very much on credit-card fees. Attracting these customers may well be negative-value, but even if it's positive, it's not worth much effort.

Stores don't want to do this for the same reason they make prices that change frequently, are one cent off from round numbers, and are in the least legible font that is legally permissible. They want paying attention to prices to be inconvenient, because paying attention decreases spending and shifts that spending towards lower margin items.

Something very close to this is done with fleet cards (cards given by long-haul trucking companies to their drivers to pay for gas and other expenses). At the high-end, these cards capture a great deal of data, comparable to a receipt. (Not exactly equivalent -- it's more detailed then a typical receipt for some data fields, but doesn't include everything that can be put on a receipt). It's expensive to implement and maintain these sorts of data capture systems, since a receipt is very flexible about the data it can contain. As a result, more broad implementation doesn't make financial sense. The fraud gains are minimal. It's worth doing in the fleet card segment because it helps with a) expense tracking, b) enforcing agreements between the large trucking companies and the chain gas stations regarding fuel discounts, and c) optimizing the choice of gas station (trading off the route efficiency against lower fuel prices). When I last consulted in the industry, this kind of data capture wasn't even a close to being profitable for general-purpose credit cards. (It's been ~5 years so my knowledge may be a bit out of date.) If you scaled back the requirements, it might be feasible.