Close to 20m smartphones in the US are equipped with NFC technology "with millions more being shipped each month", NFC joint venture Isis has revealed as it announces plans to launch nationally this year. "Thirty-five mobile devices across AT&T Mobility, T-Mobile US Inc and Verizon Wireless currently support Isis and that number will continue to grow. Support for iPhone, Windows Phone and Blackberry 10 is expected to be introduced later this year."