Abstract
The interaction between the end user and projectors is a difficult task when ordinary users need to do it. Increasing the popularity of powerful personal electronics with wireless communication capabilities has made the problem more urgent than ever before. In this research, we aim to enhance the interaction connecting the devices with the ability of human through the usability study to solve the problems in the projectors devices. The idea is an application shows the status of the USB cable so that if green means the case of the wire If there is a red connection problem, this application shows the location of the error and shows the user how to resolve it. Over the past few years, several solutions have appeared in the research literature. Many standardization bodies have also improved the preparation process. All of these protocols provide a certain level of security, but many new questions arise, such as "How to implement this protocol so that it is easy to use?" And "Is it still safe when used by someone other than a technician?" In this paper, we try to answer these questions by conducting a comparative usability assessment of selected methods to draw some ideas about their employability and security as well as strategies for their implementation.