Ask HN: Any time tracking apps that also track IPs?

I’m constantly hiring contractors from Odesk and finding out later that they are outsourcing the work I am giving them to contractors who are far less skilled. Odesk has a time tracking app that also shows work screenshots but you cannot get any data to determine if the contractor you hired is actually performing the work. So, I’m trying to find an app similar to the Odesk time tracking app that also has IP tracking. Thanks for any help.