The trial is one of several involving microSD cards and the iPhone. In fact, Visa Europe and Groupe BPCE (Banque Populaire and Caisse d’Epargne), launched a similar trial with more users of the iPhone and also some Android and BlackBerry smartphones in June in the French cities of Nice and Strasbourg. These cities, like Caen, are sites designated for expanded full NFC phone trials. The microSD are generally considered bridge technologies, until the arrival of full NFC phones in greater numbers. But the microSDs do enable banks to bypass operators to offer mobile payment, so they could stick around longer. But firm issuing models are yet to be worked out for microSDs.