I've read a lot of praise for India's IMPS. In a digitalized world with widespread usage of mobile devices universal instantaneous intra-bank payments are an obvious step forward. It'd be great if this could in some way remove the dependency on the payment processors duopoly while keeping fees low or non-existent (at the moment, depending on your gateway, instant SEPAs have a few euros fees) and decreasing friction as the proposal says, let alone the security implications. Merchants would also be more willing to adopt these technologies in less developed areas.