Abstract: Unlike excessively complex and extremely expensive methods in the prior art, this invention discloses a highly cost-effective and simple-to-use device for transferring data unidirectionally, allowing small businesses and home users to reap the benefits of advanced network security, which otherwise would have been affordable and attainable exclusively by commercial and federal entities. Because of its cost effectiveness and simplicity, the device of this invention makes it possible for every computer user to protect their internal networks from information thieves.