I have a web application written in ASP.NET MVC 3. This application have a pair of controller with some mvc action method that return json. These methods are intended to be consumed by a mobile application (BlackBerry and IPhone apps).
My question is: How can I discover which device are consuming these service? Sample: The action method XXX is being calling by a Iphone 4S. The action method YYY is being calling by a BlackBerry Torch.