It's as easy as ABC.
Elecom has just put a very innovative smartphone keyboard TK-FNS040BK on sale. Surprisingly, you just need to place the smartphone on the center of this keyboard. No cables. No Bluetooth pairing.
What's the trick? It's using NFC (Near Field Communication) protocol.
NFC is a wireless communication standard for the devices that are only about 10 centimeters away. On the other hand, it does not require any set up on the devices, but you just need to place them closely enough. (See this Wikipedia entry) Very cool.
It is made out of silicon, so it's foldable as well.
Unfortunately, there are not too many phones that come with NFC: Galaxy series and AQUOS PHONE SERIE ISW16SH to name a few. It is a very interesting technology but it really has not taken off yet.
It runs on an internal battery, which cannot be replaced when it's dead. Yes, believe it or not, this keyboard is expendable. It says it will last for 1.5 years with 8 hours of usage a day, so it's not that bad.
The price tag is 18,690 yen. It's a bit on the expensive side, but a tempting product.
Translation by G. Miyano