KDDI has a prototype Android app that can monitor your brainwaves. You have to wear a silly headband sensor and play an even dumber video game but the app graphs your brain's neural activity and concentration levels after you're done.

...Oh wait! You can totally make Android look like Windows Phone 7! Look at Japanese mobile carrier KDDI, who again linked up with design firm Iida to revamp their Infobar line of phones with an Android Gingerbread smartphone.

See-through things are cool. Anyone who ever pined for a transparent Game Boy (or was lucky enough to own one) knows that. Even if flippers are unfashionable, I still want to hotfoot it over to Japan to scoop this up.

This kids-friendly KDDI's cellphone keeps children safe from kidnapping, with a built-in GPS, and a ring that gets laser-soldered to their noses. I mean, I guess—otherwise, how can you prevent kidnappers from tossing the cellphone away? [Dvice]

At Japan's CEATEC show, Toshiba and KDDI are demonstrating a modified Toshiba T002 phone that's powered by a direct-methanol fuel cell (DMFC) and Li-Ion battery. More advanced than previous prototypes, it runs for 320 hours on a squirt of methanol.

Leave it to a Japanese cell phone carrier to figure out a way to breed robots and cell phones. KDDI's iida Polaris is a rolling robot with a touchscreen candybar phone inside that can keep your life in order.

Japanese phone king KDDI is showing off a MicroSD card with built-in Wi-Fi, sorta like those photo-uploading Eye-Fi cards everyone loves so much. Actually, they're exactly like that, except, well, much smaller.

Motorola is building a generally unremarkable "au Box" portable set-top box for Japanese electronics company KDDI. But one part of their plan stands out: It'll run Android. UPDATE: According to Motorola, this KDDI box will not run Android. See their full response below.

Starting this week, Japan's Shinkansen bullet trains will feature wireless LAN from Tokyo to Osaka.