the "SwissCard" is an excellent concept; RKilts needs to re-think the colour of theirs; the grey/black may look cool, but a higher visibility colour is more desirable (especially if you drop it). Lady Rathdown keeps one in her purse, and only once in the past four years has it attracted the attention of TSA-trolls (unlike some of the other items she habitually tries to lug on board commercial airliners).