MONITORING PLACES OF DETENTION : A PRACTICAL GUIDE FOR NGOS 34 ■ Why? What are their objectives? ■ How? What are their working methods? ■ How much? What is the scope of their activities? ■ Where? What is the geographic radius of their activities? Are the objectives of the NGO’s action plan complementary to those of the other players or do they duplicate them? Depending on the answer, should the NGO’s objectives and initial programme be modified? Socio-geographic criteria ■ geographic regions with particular problems; ■ main cities and towns. 2. WORKING IN A NETWORK: A STRATEGY FOR ENHANCING EFFICIENCY The NGO can enhance the efficiency of its monitoring and protection programme for persons deprived of their liberty by including the concept of working in a network in its action strategy. This method consists of establishing working relations with other organs, institutions, or non-governmental organisations involved directly or indirectly in the field of deprivation of liberty.