Lasers used in self-driving cars could be deployed on US-Mexico border

Technology built for self-driving cars could be the next step in the US fight against illegal immigrants arriving from Mexico. Lidar, a laser-based detection system, would cost far less to install than a border fence and could alert authorities to people trying to cross the border. Quanergy Systems, a start-up company based in California, presented its Lidar-based system at CES in Las Vegas. The firm claims it is better for the environment, cheaper to operate and'more capable' than Donald Trump's proposed physical wall. His plans for a border wall have been fiercely opposed by Democrats, forcing a shutdown of the US federal government.