CANCrocodile is a contactless reader that can read signals from vehicle data buses without damaging wire insulation. It provides protection of vehicle electronic systems, saves warranty costs, and is quickly and easily installed without configuration. The device operates from 10-50V, is compatible with various bus protocols, and has a mini LED version with reduced dimensions. Installation involves opening the case, placing CAN wires along marks, closing the case until it clicks, and connecting wires to the telematics unit and vehicle electrical network.