To continue on the ID theme and the worry about cards getting stolen from hotel rooms etc., is it not about time that all airport that subscribe to the NASP had a coherent ID card system, so that a card that is good for doors @ LHR is also good @ ABZ and NWI, and these doors are backed up by a computer system so that when a card is reported stolen from a hotel room in London can't be used within a few hours to get through the gate at, say, Manchester without alarm bells ringing?
The added advantage would be that you CAN get back on board via the airbridge stairs after doing a walkround at an airport that isn't your home base, very little more expense than airports are committed to already, added security, etc. etc.