Who is sir Walter crofton?

Sir Walter Crofton believed the length of the sentence should not be an arbitrary period of time but should be related to the rehabilitation of the offender. After becoming the administrator of the Irish Prison System in 1854, Crofton initiated a system incorporating three classes of penal servitude: strict imprisonment, indeterminate sentences, and tickets-of-leave. This indeterminate system or Irish system, as it came to be known, permitted convicts to earn marks to move from solitary confinement to a return to the community on a conditional pardon or ticket-of-leave.