This is simultaneously complex, hostile to the consumer, and a non-solution to the given problem. Write protection protects the chip, not the computer. And, do

This is simultaneously complex, hostile to the consumer, and a non-solution to the given problem. Write protection protects the chip, not the computer. And, do you seriously expect anyone to remember where they put those cards? What happens when those computers get re-sold used, and the new owner doesn't get the card with the computer?