>Hello again fellow PIClisters,
>
>Can someone tell me if it's possible to read a PIC that has had it's
>protection fuse blown?

YES

>I've heard there's a way to apply a voltage and put it into test mode.

Not exactly, but I will not tell how it's done.

> If I create a programmed chip and protect it, can someone else come along
and copy it?

YES (see number 1)

Are there any ways to prevent this from happening?

The best (not full proof) way is to zap the program pin with enough voltage
and current to destroy it without blowing up the chip.


sorry the news isn't better, but not being able to protect the code is no
reason for not developing a good product and putting it on the market. i am
much more concerned about someone copying my idea than stealing my code.

michael