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High-tech gadgets on display at London arms fair

13 September 2013 Last updated at 00:01 BST

To the defence and security industry, the DSEi exhibition in London is a chance to network, show the latest high-tech developments, and bring together buyers and sellers from around the globe.

It has 1,500 international exhibitors, and the BBC's defence correspondent Caroline Wyatt has been to see some of the newest high-tech items on display.