Hackers Can Use Lasers to ‘Speak’ to Your Amazon Echo or Google Home
In the spring of last year, cybersecurity researcher Takeshi Suguwara walked into the lab of Kevin Fu, a professor he was visiting at the University of Michigan. He wanted to show off a strange trick he'd discovered. Suguwara pointed a high-powered laser at the microphone of his iPad—all inside of a black metal box, to avoid burning or blinding anyone—and had Fu put on a pair of earbuds to listen to the sound the iPad's mic picked up.