The Artificial Intelligence Exhibition & Conference, or AI Expo, began Wednesday at Tokyo Big Sight for a three-day run, the second of its kind in Japan following the first one last June.

Taiwan's QNAP Systems Inc. has developed a health check system that lets users know any abnormal movement by babies or senior citizens. Sensors are installed under the mattress.

Fronteo's Kibiro communication robots

Morpho Inc.'s real-time food recognition system

Onkyo & Pioneer Co.'s wearable AI speaker is seen around this woman's neck.

A exhibit for automated driving

Qfeeltech(Beijing) Co. develops the base part of AI robots.

Musashi Seimitsu Industry Co.'s machine to ensure consistent product quality.


Photo gallery: AI Expo in Tokyo (1 of 2)