Steven Mercure wrote:

> Is there a product out there which will allow me to easily and cheaply
> serialize my boards.

  Boards rather than chips.  Well, it depends on how much you value
labour.  Standard manual method is to use metal punches to stamp the
number into the board.  About 30 seconds per board, requires skill,
hammer and *good flat* anvil, before board assembly.

  Will binary do?  If you want it automated, one method is to print
an area with small "tokens" which have two contact pads either end.  The
PCB passes (stepper drive) under a "print head" with two robust
contacts, selectively burning out the "tokens".
--
  Cheers,
        Paul B.