Sweden's Fingerprint Card has revealed that its FPC1025 touch fingerprint sensor features in a new product from Blu.The Pure XL, noted for its six-inch screen size, was launched last week with a fingerprint sensor on the back.Blu is an American smartphone company founded in 2009 – it has become know for budget “flagship killer” phones.Earlier this week, the same sensor was selected for by a Chinese smartphone manufacturer, ivvi for its K2 smartphone.