They're probably talking about the "hexbright" (usb-rechargable, arduino-programmable, so you can implement UI experiments like "shake it to make it brighter" -

They're probably talking about the "hexbright" (usb-rechargable, arduino-programmable, so you can implement UI experiments like "shake it to make it brighter" - it's also a really bright light.) Will it impact the market for boring "dead-battery storage" D-cell lights? Of course not. But if you've ever wanted to say "even my flashlight is open source..."