I’ve picked seven of the best Bluetooth-connected scanners that plug into a car’s OBD2 socket and put them against each other in a mega test of diagnostics. Here are the best Bluetooth OBD2 scanners.

Soon, you could make everything in your life smartphone-app-controllable—or at least the things that have wires. A California-based inventor has taken to Kickstarter to fund the launch of the latest ...