After two years of research and development, trendigo was deployed in payment terminals at 150 merchants in Montreal. Despite the success in use: nearly 1,700 users in a few weeks, the solution encountered major obstacles linked to payment terminals. Frequent updates, unreliable connections on some models, significant costs for merchants ... We have completely revised the payment method so that it benefits both the customer and the merchant. This experience made it possible to finalize the payment infrastructure (back office) and PCI certification.