I've never made much use of 'live' media except for installation and system rescue, but I found the ideas shared by Klaatu particularly thought-provoking.   I have been travelling and wanted to perform some simple task like airline check-in from a lobby computer but hesitated over using Windows of any flavor for anything.   It would be fun to at least try to reboot these machines as Linux, but don't things like network proxy configuration screw up such attempts?

It would also be fun to test-drive Linux on PCs or laptops in computer stores, but don't staff wander by and tell the perpetrator to stop?  And doesn't secure-boot stop such attempts anyway?

I'm curious therefore, Klaatu, on what kinds of systems has this approach been successful?   Older, pre-secure-boot PCs?