What about cash transactions? I'm still searching for something that can efficiently OCR my receipts and extract a total and a store name automatically. (and in Japanese)
Cash is still an unsolved problem. Because receipts are so different, nobody has a solution for the OCR task. The best I've seen are expense-tracking apps for businesses that offer such a service for a fee - because they farm out the job to low-paid offshore workers with stuff like Amazon Mechanical Turk.