Lpc2000

I think we reached the consensus (with a little Philips help) that
code protection is available only in the 64 pin package, when the boot
loader >= 1.63

I wonder would that be a commercially reasonable protection when 2106
is used with an external electronic serial number. The flash can be
customized to accept only the right serial number, but there's no code
protection against JTAG attack. 

What do you think? How long would it hold?