The best thing about this system is its ability to change messages as per demand without any hassle or delay. It also has very user friendly interface which makes it easy for users to operate easily even if they have no technical knowledge. I can't say anything negative because there really isn't much I dislike in terms of functionality. You will need someone who knows how to use computer systems well so you won't be able to do everything yourself but if your personnal assistant/tech support member is knowledgeable enough then all problems are solved. This digital sign system was installed at our office by an expert technician from the manufacturer itself. Since we were not having any previous experience with such kind of products, he guided us through every step patiently until we got used to using it. There wasn't anyone who had issues while installing it since the installation process was simple and straightforward.