Washington: Amazon goes to trial on Monday in a US government lawsuit that accuses the e-commerce giant of using tricks to enroll millions of customers in its Prime subscription service and then making it nearly impossible to cancel. The Federal Trade Commission's complaint, filed in June 2023, alleges that Amazon knowingly used designs known as "dark patterns" to trick consumers into signing up for the $139-per-year Prime service during checkouts. "For years, Amazon has knowingly duped millions of consumers into unknowingly enrolling in its Amazon Prime service," the original complaint states. The jury trial is expected to last about four weeks and will largely rely on internal Amazon communications and documents as well as Amazon executives and expert witnesses. If the FTC prevails, Amazon could face substantial financial penalties and be required to overhaul its subscription practices under court supervision.