You're hungry, but don't eat yet

So reads the display on the Toshiba Regza phone on display at NTT DoCoMo's booth at the Ceatec electronics show this week in Japan. And it has a point. It's been a few hours since breakfast and I could anyway go for a quick ramen, nevertheless probably should wait until lunch.

Few times into the breathalyzer devices

Ceatec attendees line up to breath a few times into the breathalyzer devices, and few seconds later a nearby phone lights up with their numbers. The readings seem rough in the best case -- one healthy-looking man came up 150 percent hungry and several others all came up specifically 36 percent. The product has no firm launch date.

The technology is part of DoCoMo's ongoing push to expand the role of mobile phones in day in day out life. The country's largest carrier, it runs near half the handsets in Japan.

Also on display were a set of swappable cases that add various sensors to a phone, including a radiation detector and a bad breath analyzer.

The carrier as well touted a high-speed charging service for its smartphones, that is in accordance with development. External battery cases made for NEC Medias smartphones could be fully charged in just 10 minutes, at that time provided another 50 percent to the phone's original battery.

The batteries are based on lithium-titanate innovation

The batteries are based on lithium-titanate innovation, which is quick-charging however can have lower capacity than the traditional lithium-ion batteries used in mobile phones.

DoCoMo hopes to in the end build external batteries that work with a wide range of phones, at the time set up quick-charging stations at convenience stores and other locations.