Funny NYPD wrote: > The unique read-only ID can be used for many functions. For instance, > it can be used to identify each MCU, each individual products, etc. Yes, but programming in your own unique ID address those problems too. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist