should be documented. Special measures, such as the dates on which handcuffs are placed on the prisoner and removed from the prisoner must be fully documented and the justification should be noted if a prisoner is handcuffed for an unusually long period of time. In the event of a deprivation of liberty, the detained person is entitled to certain minimum rights (notification, information). Otherwise, his right to liberty is infringed. Public security officers must inform affected persons of the right of notification. Every detained person must receive verifiable instructions regarding his/her rights to notification and information. Such instructions are verifiable if they are appropriately documented. In this way, the extent to which such instructions were actually given can be reviewed after the fact. Likewise, any claim of individual rights or waiver of individual rights by the detainee must be signed by hand and thus expressly documented. If a person who has been granted his/her rights refuses to sign, this must be documented by the relevant police officer to satisfy the requirement of documentation. “Verifiable” information regarding prisoner rights As already stated in the NPM Report 2013 (pp. 76 et seq.), the commissions again criticised many deficits in the documentation during their visits. In the past, the NPM has motivated the Federal Ministry of the Interior to take consciousness-raising measures with individual police officers and ensure that the requirement of precise documentation is stressed through training and educational sessions. During the reporting period, the NPM again observed deficits, such as the lack of signatures by detainees and intervening police officers or information on the time of day and place of the detention. Generally, the commissions can clear up documentation deficits directly with the commander on duty at the concluding meetings.  Clarification at concluding meetings Detention at police stations must be fully and verifiably documented. 2.6.7.2 Inadequate equipment at police stations During visits, the commissions observed various deficits in the equipment at police stations. These findings during the reporting period included unsatisfactory heating and ventilation systems, no equipment or defective equipment (obsolete radios) or deficits in housekeeping or hygiene. Such complaints are regularly made during the inspections of the NPM, and corrective action is promised by the police stations. Here, too, the commissions often use the concluding meeting to discuss problems on site and obtain improvements. Only if there is no promise to resolve the problem does the NPM correspond with the Federal Ministry of the Interior after the visit. These are generally 133 In general, the local police station promises to eliminate deficits