I would like to export my VirtualBox piaware virtual machine so that some friends can import it on their Windows PCs without having to build it from source. In order for them to run their own instances of piaware and claim their own piaware client ID, what piaware config files do they need to modify?
This should do the trick.
For sd-card install you also need to delete the feeder-id from /boot/piaware-config.txt
if it is configured there.
(Best to replace the file by the default file)