Using ultrasound waves propagating through a solid surface, researchers at Washington University in St. Louis were able to read text messages and make fraudulent calls on a cellphone sitting on a desk up to 30 feet away.
news, journals and articles from all over the world.
Using ultrasound waves propagating through a solid surface, researchers at Washington University in St. Louis were able to read text messages and make fraudulent calls on a cellphone sitting on a desk up to 30 feet away.