I don't know whether screwdrivers are still banned for flight crew or not as I have not carried one for ages. However it amused me that coincidentally with this particular ban coming into effect, my company, keen to do their bit for enhanced security, required us to open and inspect the interior of all openable hatches on the exterior of our aircraft on turnaround. Just in case an engineer or some other person authorised to carry a screwdriver on the apron had used one of these small hatches to locate a bomb in the aircraft. To ensure that this check was carried out, a form was supplied which had to be signed by the captain in numerous places, and handed to the dispatcher before departure. we always departed, usually on schedule.................!