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A 'virtual' border instead of Trump's wall?

AFP Las Vegas, NV, USA Jan 09, 2019, 11.12 AM (IST)

A Silicon Valley company specializing in motion and obstacles detection presents its new application at the CES in Las Vegas: a completely 'virtual' border, where the slightest movement would be immediately detected thanks to laser sensors, "a much cheaper solution than the wall wanted by the American president" according to Quanergy.