A very important feature for any digital signage solution is to know the number of people who have actually viewed the screen. With this feature we can have an additional analytics to know exactly how many people viewed the weather screen, any specific information… It can be captured using a simple web camera connected to the android app.
This will help a lot in analytics and overall growth of XIBO.
Technically if you know how to implement it, then you’d fork correct branch (most likely develop), implement the work and the submit your commit referencing the issue number on GitHub ie xibosignage/xibo#50 in this case.
Then we will need to review your code and most likely have a discussion about it, which may result in some further changes to the code if needed.