Relay Payments has signed up its third-largest customer with a deal for convenience store giant Circle K to accept its payment system at what it refers to as its “truck-accessible locations.” The significance of the deal can be seen in the numbers: Relay Payments says its payment service is accepted at more than 3,000 locations. Circle K is bringing about 500 new outlets to the universe of outlets that accept Relay Payments. Meghann Erhart, an executive vice president at Relay, said in an interview with ...