Over the past few decades, it’s become easier and easier to create fake receipts. Decades ago, it required special paper and printers—I remember a company in the UK advertising its services to people trying to cover up their affairs. Then, receipts became computerized, and faking them required some artistic skills to make the page look realistic. Now, AI can do it all : Several receipts shown to the FT by expense management platforms demonstrated the realistic nature of the images, which includ…