Liveware was used in the computer industry as early as 1966 to refer to computer users, often in humorous contexts[1], by analogy with hardware and software.[2]
The term liveware is found in the Culture novels by Iain M. Banks. A Culture Ship is named "Liveware Problem". This is likely a pun on a common computing jargon hinting at the fact that the problem lies with the system's user.