Flux, a fintech startup founded by ex-Revolut employees, wants to make paper receipts obsolete Ifeadi C. 01:35 TechCrunch, Zero Tech Blog Flux, a London-based fintech startup founded by three early employees of foreign exchange and banking app Revolut, is on a mission to make store receipts truly digital. Read More via Zero Tech Blog Share this Share on FacebookTweet on TwitterPlus on Google+