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Security

Submission + - Turning the Belkin WeMo into a deathtrap (hackaday.com)

Okian Warrior writes: As a followup to yesterday's article detailing 50 Million Potentially Vulnerable To UPnP Flaws, this video shows getting root access on a Belkin WeMo remote controlled wifi outlet. As the discussion notes, remotely turning someone's lamp on or off is not a big deal, but controlling a [dry] coffeepot or space heater might be dangerous. The attached discussion also points out that rapidly cycling something with a large inrush current (such as a motor) could damage the unit and possibly cause a fire.
Technology

Submission + - Liquid Metal Battery (mit.edu) 1

Okian Warrior writes: "Donald Sadoway at MIT has invented a new type of battery using liquid metal.

The invention uses a molten salt composed of two metals. Under electrolysis, the salt separates into the metal components — one of which is lighter than the salt and floats to the top, the other being denser and sinks to the bottom.

Put energy in and the salt separates — the metal layers get thicker and the salt layer gets thinner. Reverse the process to take energy out — salt is formed and the metal layers get thinner.

Supposedly more power density than lithium batteries, and a good match for installing at fixed locations, such as the base of windmills."

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