PURPOSE: To control the entrance or leaving of a field worker into or from a building accurately at a real time.
CONSTITUTION: A telephone 2 being installed on a construction site and having a bar-code reader 1 connected to a public telephone circuit 3, a personal information card 20, on which identification codes imparted at every field worker are printed as bar codes, and a host computer 4 mounted on a control section and connected to the telephone 2 through the public telephone circuit 3 are provided. The identification codes of the personal information card 20 are read by the bar code reader 1 of the telephone 2 at the time of entrance or leaving into or from a building on the construction site, thus controlling entrance or leaving into or from the building of the field worker on the host computer 4 side.
TAKAHASHI NAONOBU
NANAHARA SHIRO
DORO MASANOBU
SAKIYAMA SHINICHI
KAWAHARA JIYOU
OSAKA SEKISUI HAIMU KENSETSU K
SEKISUI SYST CENTER KK
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