An activity tracker defines a context for a screen sharing session, wherein the context includes at least one term of metadata. The activity tracker establishes a shared link to a second computer, comprising authenticating the second computer. The activity tracker shares at least a first resource rendered by a first application, wherein the first application renders data of the first resource. The activity tracker receives a preliminary user input to access a second resource, wherein the preliminary user input to access is a command to render a resource. The activity tracker or sharing controller renders the second resource to form a rendered second resource, wherein a computer environment comprises the first resource and the second resource. The activity tracker determines that the second resource fails to satisfy the context.