Research shows how router LED lights can be used to steal data - SiliconANGLE
Micro Fence | Router Base | Light Rings | LED | Woodworker's Journal
Amazon.com: WiFi Modem Dongle, 4G LTE WiFi Modem, WiFi Modem Dongle with SIM Card Slot, TDD FDD GSM Car WiFi Mini Wireless Router with LED Status Indicator, Up to 10 Associated Users
Why is the LED in router always blinkng? Is there any pattern in which it blinks? - Quora