Roombas Could Find Wi-Fi Dead Zones

A Roomba robot vacuum will soon be able to map the Wi-Fi coverage in your home. It’s an official feature that makes an existing hack a little easier to use.

The idea itself isn’t particularly new as a few folk had figured out it’s a slightly more efficient way to track coverage around a home without the hassle of running a signal measuring app and then painstakingly walking round every corner of the home yourself. Roomba is simply taking away the need to create a custom app (combining location and signal monitoring) and fix a phone to the cleaner.

To start with the feature will only be available on the Roomba 900 series as part of an application-only beta program.

There is a catch however: Roomba’s chief executive has previously said the company is looking at selling data collected from the cleaners to major tech firms. This would apply to all models, not just those running the Wi-Fi tracker.

It’s definitely a case of the technology being neutral and the usage anything but. On the upside, Roomba is stressing the benefits if, for example, smart home speakers could tell you the best place to put them, or air conditioning and lighting could adjust to specific room layouts.

On the downside, there’s clearly room for targeted marketing if a company has a rough idea of, for example, what furniture you do and don’t already have.  To its credit, Roomba insists selling customer data will only work on an opt-in basis.


Hilarious Illustrated Chart of Winter Hazards by Gemma Correll [Comic]

winter

You think you’ve escaped the cold, icy grip of winter? You could not be more wrong. Cartoonist Gemma Correll  drew this handy guide to some of the lesser known winter hazards we still are all in danger of encountering. Although the further and further we get from Christmas, the less we have to worry about sentient lights, feral mittens are a big threat around my neighborhood usually through early March.

Also, gotta love the giant, evil Furby. Check out her page for more adorable and hilarious work like this.

Via FourEyes, H/T to LaughingSquid

The Unreasonable Efficiency of Black Holes [Science Video]

This video is about how efficient various reactions are at converting mass to energy (as we know from the Einstein mass-energy equivalence of E=mc^2). Antimatter is very efficient but it is not naturally-occurring. Chemical reactions like fire or explosions are very inefficient. Nuclear fission and nuclear fusion are better, but not amazing on an absolute scale. Non-rotating black holes (Schwarzschild) and rotating (Kerr) are by far the most efficient, due to their accretion disks and very small radius of their innermost stable circular orbits.

[Minute Physics]