@clhodapp: Windows supports the "focus follows mouse" idiom, there's just no control panel option for it. You can enable it in the registry:

@TheCrudMan: Microsoft's BlueTrack mice have the best optical tracking around.

@ps61318: I'm its greatest fan.

@Anonymous: Opera is irrelevant.

@ps61318: That's why I changed my comment :P.

@spencercal: WebM is more open than H.264.

@blyan is not on fire: "We don't want to pay licensing fees" is a reasonable argument. That's why we all dropped GIF for PNG.

So we've got Firefox and Chrome on one side and Safari and IE on the other.

@vinod1978: Chrome, Firefox and Youtube are a big enough ecosystem on their own.

@DennyCraneDennyCraneDennyCrane: Bingo.

@Zonky: If the battery lasts one day of work it doesn't matter.

I'm just amused at the use of devices with non-replaceable batteries.

@A Caving Ape: One of the big problems with flywheels in vehicles is the gyroscopic forces they induce.

@The5thElephant: It's questionable whether something like this is worth the effort to wrap a submarine in. The biggest problem for submarines is passive sonar, not active sonar, and this device won't do anything to dampen sound emissions.

@The5thElephant: No, it doesn't require energy input to accelerate a wave. Wave propagation in matter (i.e., acoustic waves, EM waves are slightly different but analagous) is a statistical property based on temporary displacement of molecules. A wave doesn't accelerate in the same sense that an object does.

@UltimateFlank: Well, this kind of cloaking technology was originally developed for light in the microwave band. And microwaves tend to have pretty similar wavelengths to acoustic waves. People have been trying to push into higher frequencies: infrared, and eventually visible light, but the nanotech fabrication…

@UltimateFlank: It's much easier to build an acoustic cloak than a visible light cloak, since acoustic wavelengths tend to bottom out at a few millimeters, whereas visible light wavelength is around 500nm. That requires a level of nanotech fabrication we don't have yet.

@The5thElephant: It's a wave cloak, so it's basically refraction. When waves pass from one medium to another, their direction of travel is changed (they refract) based on the difference in the speed of sound (or light, if these are EM waves) between the two materials.

@Cochese 2.0: Are you also in the habit of losing your credit and banking cards? And given the billions that are lost every year to identity theft and online fraud, I wouldn't say the system is "fine." The current system is horribly insecure.

@KamWrex: The simplest multi-factor authentication systems use RSAkey dongles. They are not biometric and require no card swipe, as the device generates a new password every 30 seconds based on a shared secret.