Expensify is a popular app that helps employees quickly submit reports for business-related expenses. Expensify’s standout feature is its SmartScan OCR, or optical character recognition, technology. The feature saves data-entry time by scanning your receipt, verifying that the expense is compliant with your employer’s rules, and then organizing it into an expense report — all automatically. When the technology fails, however, Expensify says it has a team of secure technicians to intervene behind the scenes. But Twitter users grew concerned after the discovery of several Expensify receipts on Amazon’s Mechanical Turk service last week. Mechanical Turk is a crowdsourcing marketplace where anyone can post tasks that need completing for small sums of money. Twitter user Rochelle found receipts hosted on Expensify.com that were visible on the platform, complete with details about names, dates, addresses, and signatures. One receipt apparently showed Uber pickup and drop-off locations. Cool, I just went browsing through @expensify's jobs on MTurk. found boarding passes, hotel receipts (name, dates, details), medical receipts, addresses, signatures, and a whole lot of burgers and burritos.I also just turned off SmartScan, because that's super creepy. https://t.co/VVJ522Xw2V — Gary (@GaryPendergast) November 23, 2017 In a blog post, the company says those receipts were part of testing its new Private SmartScan feature that allow companies to staff their own team of Mechanical Turk transcribers. Expensify said that it started live testing the system on September 20th, with the initial testing only using Expensify employee receipts. On November 15th, the company began processing 10 percent of non-paying user receipts that require human review on Turk, but access was still limited to its own SmartScan agents. It then opened up access to the receipts to all vetted Turk workers on November 22nd. A day later, after Twitter users voiced their concern, the company stopped the test and returned all the receipts to private SmartScan agents. “The only users who can access receipts are the Mechanical Turk workers. The only way to access the worker interface (to view receipts) is