N.H. Rev. Stat. Ann. § 622:24

No person shall deliver or procure to be delivered or have in his or her possession with intent to deliver to a prisoner confined in the state prisons, or deposit or conceal in or about the prisons, or in any building or upon any land appurtenant thereto, or in any vehicle entering the premises belonging to the prisons, any article with intent that a prisoner shall receive or obtain it, or receive from a prisoner any article with intent to convey it out of the prisons, or bring into or attempt to take from the prisons any article contrary to the rules and regulations established by the commissioner of corrections and without the knowledge and permission of the commissioner of corrections, or designee.