Wi-Fi signal-sensing T-shirt

John Biggs is a writer, consultant, programmer, former East Coast Editor and current contributing writer for TechCrunch. He writes mainly about technology, cryptocurrency, security, gadgets, gear, wristwatches, and the internet. After spending his formative years as a programmer, he switched his profession and became a full-time entrepreneur andwriter. His work has appeared in the New York Times, Laptop, PC Upgrade, Surge, Gizmodo, Men’s Health, InSync, Linux Journal, Popular Science, Sync, and he has written a book called Black Hat: Misfits, Criminals, and Scammers in the Internet Age.