By Sebastien Malo NEW YORK (Thomson Reuters Foundation) - A cell phone tool to survey working conditions of Ghanaian fishermen and a mobile system to collect forced labor data are among the finalists in a global competition to harness technology to identify enslaved workers in supply chains, organizers said on Monday. The contest, Rethink Supply Chains, aims to send a message that efforts to make supply chains transparent and slave-free create market opportunities, said Catherine Chen, director of investments at Humanity United, a non-profit participant in the project. Some 18.7 million people around the world are estimated to be trapped in forced labor in the private economy, generating $150 billion in annual profits, according to the International Labour Organisation.

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