I, too, am a security cheat. I keep a small Swiss Army knife on a key ring I carry for travel (just the house key and car key on it) and forgot to take it off before a series of flights from Switzerland back to Alaska through LHR. Not a single security check saw that knife in my handbag! The young lady doing security at our courthouse here caught it first time I went through and had not changed handbags after my trip. Stunning failure!