lol! Yes, my lithium ion rechargeable Palm has been very reliable, I must say. I have the IBM version of the m500 called the c500. The only difference is the case is black and it says "IBM" instead of "Palm" on it.
I can scale the readings however I want, but I don't even have the data collection and display part written yet. Just the code scanner. I use another guys freeware program (shame on me) to do data collection. His is pretty nifty and has a lot more work into it. But as far as I know, he and I are the only freeware Palm scanners out there.
My software can also be used on the Palm to look up the meanings of codes manually, in case you have a code but not the meaning. Some people use it to verify what the dealer tells them when they read codes, even though they don't have the interface.
There's a topic on the board somewhere for "Free Palm OBD scanner software" or something like that. In it, I liked to the software so you can download it for a Palm -- not that YOU need it, lol.