Hooded Inmate. Eastern State Penitentiary was the world's first true "Penitentiary." In order to encourage penitence - or true regret - in the hearts of criminals, inmates would spend their entire sentence in solitary confinement. On the rare occasion when an inmate left his cell, a hood was placed over his head to ensure his identity would remain anonymous. Ideally, no inmate would ever see the face of another inmate.