"People can go online and register their journeys - the system will then search for a matching partner to help them on their journey to work, " he said.

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Specialist dog teams were drafted in to help in the search for the office administrator on Thursday after detectives using mobile phone technology pinpointed several areas of interest in the 4, 500-acre forest.

BBC: Sian O'Callaghan search: Kidnap arrest made in Swindon

Wireless phones may be able to help commuters across the country who search for traffic reports on the radio, online, and on TV.

NPR: Cell Phones: A New Commuter Tool?

His son said the official search had been called off and they were relying on a small team of volunteers for help.

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The Center for Entrepreneurial Studies has excellent resources for those considering a search fund, with annual reports on search fund performance and detailed documents to help you get started.

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The cases have sparked a search for technologies that can help and Indian trade group Nasscom recently announced a competition for firms to develop apps specifically focused on keeping women safe.

BBC: India works on GPS watch in fight against rape

The office has allowed anyone to search for unclaimed property on its Web site for many years, but it made the search available at claimit.ca.gov on February 20 to help people find the service more easily.

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The conversations were on speaker phone and were heard by several friends who had gathered at her flat to help search for her.

BBC: Sam Dunne