[explosive chip destruction] Goes like this; Client has money. Mark wants money. Client says "Do this, and I'll pay you Mucho Money." Mark does what they want, even if not MY style, fairly often Better find out how much it will actually cost to make any explosive based destructive device legal. Money doesn't go far when you need to pay lawyers to keep you out of jail. We have a crypto device that supposed to erase its keys if anyone tries to tamper with it. I took one apart (very carefully, after noting no "danger: explosive" stickers :-) It didn't contain anything more impressive than a battery and some microswitches. BillW