You need to know the keycode for each machine.
The keycode is different to the serial number.
There were 3 ways to obtain a keynote.
1
It came with the machine.
2
Read it back from any working key for that machine.
3
From Segway.
I suspect that Segway may no longer assist you.
If you can get your keycode, I can assist you.
I could calculate the data string needed to be written to any iButton.
I could email you a spreadsheet so you can do I it yourself.
I could make keys for you.
Michael
www.dgbint.com