the level of security a prison has depends on the type of prison. a "maximum security prison" has even more protection than a regular prison. some prisons in the united states have a section called "death row", where people who have been sentenced to death are kept in prison until their execution. on the other hand, an "open prison" is a prison where inmates can often travel out of the prison. these are used for prisoners who have been convicted of minor crimes, or who will soon be released.