That’s how Bi-Card was born, something akin to an electronic business card which, connected to a PC via USB cable, points to the web browser or other applications. It is, in short, a business card-sized board on which the track is not fake but it is effectively an electronic circuit, which circuit diagram. The thickness is really small thanks to new, all-SMD, very low-profile components (the thickest one is the micro USB connector, if you don’t mount the expansion connectors).