Code readers

Morning guys,
If i was to buy a hawkeye code reader it will be coded to my disco 2. To add a code for a different model it has to be payed for, now if any of you guys have one for a different model could your code be put into mine so it could be used ,i dont mind going on a list if anyone needed a diagnosis on their vehicle if they were in my area, just a thought,
Many thanks Tonto

If you have an Android phone or tablet, you can put the Torque Plus app on it for £3, add a bluetooth OBD2 dongle from Amazon for £7, and it will talk to most vehicles. May not be quite as good as a dedicated device, but for a £10 it's got to be a good deal. I got one for my KIA, and it works fine.