Which of the following is NOT allowed in an inmate’s possessions?

Inmate possession regulations are typically designed to maintain security, health, and order within the facility. Among the items listed, canned goods are not allowed because they can present a safety risk. Canned goods can be used as makeshift weapons, can be difficult to inspect for contraband, and may lead to issues with food safety and sanitation in a detention setting.

On the other hand, contact lenses and prescription eyeglasses are necessary for the vision needs of inmates, and allowing them ensures that they receive adequate healthcare. Religious literature is also permitted, as it supports the inmates' rights to practice their faith, which is important for their mental and emotional well-being. These items are seen as essential for the inmates' personal needs and rights, while canned goods do not align with the safety and operational priorities of a detention facility.