MTAC is our latest security feature. It is similar to IP Filtering engine, except its purpose is to control mobile phone's access to Green Screens Terminal Service.
The reason is very simple, if mobile networks are used, mobile phone can switch IP addresses every few minutes which makes secure access control based on IP almost impossible. By using an application unique installation ID, as shown on the image below, it is possible to control and identify a specific phone.
In a case if a phone is stolen or lost, it is easy to block access to that phone just by modifying phone access control list in Green Screens Web Admin panel.
Access to services will be denied if the phone unique ID is not on the list, as shown in the next image.