UK-based smartphone-making startup Sirin Labs has announced that it will build a smartphone 'Finney' to allow users to pay with cryptocurrency like Bitcoin by offering "ultra-secure blockchain-enabled environment". The phone, priced at $999 (₹65,300), will have a 5.2-inch display, a 16-megapixel rear camera and 8 GB RAM. It will also have a built-in wallet with three factors of authentication.