> 1-Wire, unique 48-bit ID. I don't remember the year it was introduced, or cost. IIRC, their 1-wire temp sensors also have that (at least they did about 10 ye

> 1-Wire, unique 48-bit ID. I don't remember the year it was introduced, or cost. IIRC, their 1-wire temp sensors also have that (at least they did about 10 years ago when I was messing around with hobbyist electronics): https://www.adafruit.com/product/374 https://www.adafruit.com/product/374