SolarTech Ltd does not allow research staff to remove laptops or other portable data storage devices from the laboratory. This is enforced by monitored electronic and X-Ray scanners located at the laboratory entrance. Identify the component(s) of the system of internal control to which each of the above points relates. Give reasons for your choice. If you have chosen control activity, state which type(s) of control is (are) being implemented, for example segregation of duties.