To make sure that the design remains as thin as possible without having to suffer from any compromises in the performance, Square had to go back to the drawing board in order to custom design the bunch of key components within. Among these changes would include the magnetic read-head as well as spring which were specially designed to deliver a far more accurate card swiping experience. Apart from that, it also features custom electronics within a single chip, letting it rely on the plugged-in device for power so that you need not have to carry more weight than necessary. It is said that the new and improved Square Reader will hit nearly 30,000 retail stores from next year onward.