Card-tech MSR 100u USB 3-track Magnetic Credit Card Reader Mini Mag Stripe Swipe Magstripe Hi-co+5pcs Magstripe Card Bi-direction card reading, high capacity program design, high card reading ability. Can free to choose enter key between data of each track. Can customize tract starting character. Its size is small enough to fit into most tight spaces yet not so small to impact card readability. Mult Mode USB interface one USB reader handles multiple USB modes, no need to have a separate unit for RS232, Keyboard, and HID interfaces. Mult Mode USB interface one USB reader handles multiple USB modes, no need to have a separate unit for RS232, Keyboard, and HID interfaces.