TOKYO -- Just in time for the sweltering heat, Sony and Fujitsu General have come up with personal air conditioning that lets people keep their cool while they are out and about.
Sony began sales Wednesday of a device that tucks under the shirt. The Reon Pocket is worn in a slot at the back of the neck of a customized undershirt. The wearer uses a smartphone app to turn the temperature down, or up, as the device can absorb or generate heat.








