Alan B. Pearce: >I would suggest this could well become your headache, to recover such >devices afterwards ... On the other hand, there is also a risk that someone could throw their device in the toilet, which would prevent it from working and maybe they would come back to me and request to have it replaced. Sure, there might be an odd hacker who finds the ICSP connector interesting and attempts to do something which destroys it, then abuses the warranty to request a replacement, thus incurring a cost for me. But this will not happen very often. >You mean you haven't checked out how to protect the bootloader area? How could I protect it against erase? All PICs can be erased, can't they? And if they can't, the attacker could replace the PIC for a new one, and put the spoofed bootloader into that new PIC. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist