I'll go right ahead and admit that I was wrong on this one. Really does look like it's full on NFC only with no bluetooth. Wow. Cool. But still it's proprietary since there's no open or established protocol for this type of peripheral device input. What does that mean to us? Simple: It means that this devices requires a hardware specific closed source binary drivers to function since no open protocol could be used by a third party to develop for us. That means no automatic inclusion in the kernel, and no third parties writing a driver or app to make this work on platforms not directly supported by the keyboard maker. That equals a bunch of sad N9 owners.