MONITORING PLACES OF DETENTION : A PRACTICAL GUIDE FOR NGOS 40 ■ access to all places used by and for the persons deprived of their liberty (living quarters, kitchens, sanitary installations, etc.); ■ interviews in private—out of hearing and, if possible, out of sight of the surveillance personnel—with persons deprived of their liberty who so wish and with those selected by the members of the visiting team. The authorities must also guarantee that the detainees with whom the visiting team has spoken are not subjected to pressure, threats, or ill-treatment by the officials by way of reprisal; ■ the possibility of repeating the visits at a frequency determined by the NGO according to its objectives. It is also strongly recommended that the authorisation permit: ■ visits without prior notification of the detaining authorities. Failing this, and in all circumstances, access should be given as quickly as possible. Where the authorities require that the NGO inform them in advance of the dates of the visits, the notification period should not exceed several days; ■ access to all registers in the place of detention relating to the persons held there and their living conditions.