Hollywood has a long history of grossly exaggerating hacking scenes. A nerdy guy hacking into a large corporation in seconds with just a few keystrokes is a classic example of an overused movie trope.

So a few months ago, I stumbled upon a thing at Adafruit.com called a "Charger Doctor" which was really just a Multimeter designed to slip inline with your USB cable. It was $7.50 and I liked it.

Legion Meter will provide everything you could possible want to know about your chargers, all while helping you maximize their potential. Charging is an integral part of life. No matter where I go I’m ...