A liveness property can not be violated in a finite execution of a distributed system because the good event might only theoretically occur at some time after execution ends.
He shows that television as a concept preceded film as a medium, establishing a horizon of expectations that helps to account for films obsession with liveness during its first decade.
Any artist playing with liveness, be they sculptors, poets, musicians, dancers, performers, games designers or media artists, might fit under the banner of live art.
While liveness verification has become a standard in modern physical biometric verification systems, they are not without flaws that allow pre-recorded or captured biometric data to be replayed.
