We are also told that if the pilot is deemed by Barclays to be a success, it has the potential to be rolled out to the 5 million customers using the main Barclays Mobile Banking App. On the merchant side, the trial also sees Flux partnering with Barclaycard, which will provide the ability for merchants, via integration through their point-of-sale devices, to issue digital receipts to any customer. This is noteworthy since Flux’s chicken and egg problem is that it needs merchants to adopt its technology in order to persuade banks that it is worth partnering. To date, this includes all 111 EAT stores in the U.K. and Bel-Air.

https://techcrunch.com/2017/11/13/fintech-startup-flux-partners-with-barclays/