Olin Lathrop 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. Exactly. Each of our scan tools are programmed with a unique ID during production. Vitaliy -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist