Remember CurrentC, the QR-based mobile payment service created by MCX, a consortium of the largest merchants in the US? Yes, the one that was going to be used in major retail stores across the US, while Apple Pay was banned there? The one that ultimately never got off the ground. Well, the technology behind CurrentC has just been acquired by JPMorgan Chase. The bank says it will help expand Chase Pay, the mobile and digital wallet for Chase customers.