These virtual walls could be the cheaper and more effective answer to Trump’s $5 billion border wall

While the debate over Donald Trump's proposed wall continues, government money is flowing, and tech companies are looking to cash in. Companies like Quanergy and Anduril are working on electronic border solutions that would be more effective and cheaper for taxpayers than building a physical wall. CNBC traveled to the U.S.-Mexico border town of Del Rio, TX to see a prototype of a virtual wall, and also found out why locals in the area would rather electronic surveillance over a physical barrier.