Hikvision -- the world's largest video surveillance company -- employs image sensors supplied by Sony in 180 of its surveillance camera models and sensors from Sharp in two camera models, according to its product brochures.
(File photo)A Sony spokesperson said the company does not comment about its customers but its basic policies include respect for human rights.
Hajime Kuramochi, associate professor at Tohoku University of Community Service and Science, said the limited discussion in Japan of human rights means local companies are less active in addressing such issues.
"Japanese companies' awareness of human rights lags 20 years behind U.S. and European companies," he said.
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