within the European Union, a Polish National ID card (Dowód osobisty)) while travelling in the Schengen Area. Poland requires all Polish citizens (including foreign citizens who are, who can be claimed to or are suspected to hold Polish citizenship) to enter and depart Poland using Polish travel documents. Russia Article 27 of The Russian Constitution states that "1.Every who legally stays in the territory of the Russian Federation shall have the right to free travel, choice of place of stay or residence. 2.Everyone may freely leave the Russian Federation. Citizens of the Russian Federation shall have the right to freely return to the Russian Federation." Freedom of movement of Russian citizens around the country is legally limited in a number of situations, including the following: In closed cities (mainly nuclear research centers). Special permits are necessary for both visiting and settling there. In certain areas near Russia's international border. In areas with declared state of emergency. In the interests of justice (imprisonment, bailiff's order, arrest, undertaking not to leave during a criminal investigation etc.). For citizens under military conscription. Since the abandonment of propiska system in 1993, new legislation on registration of residence was passed. Unlike propiska, which was a permit to reside in a certain area, registration of residence as worded in the law is merely notification. According to the Russian legislation, there are two types of registration which a person may obtain simultaneously. Permanent registration is obligatory and gives the right for property ownership, temporary registration can be received for a period of time due to rental contract. However, administrative procedures developed "in implementation" of the registration law imposed some conditions on registration which effectively made it depend on the landlord's assent. Since landlords are often not willing to register tenants or guests in their properties due to tax payments, many internal migrants are prevented from performing their legal duty to register. Before 2004, it was common for police to fine those having failed to register within 3 working days at a place of stay. In 2004, the maximum permitted registration lag was raised to 90 days making prosecution infeasible, removing practical obstacles to free movement. The Russian citizens' right to leave Russia may be legally suspended on a number of reasons including: The case of obtaining access to classified documents while working for the state or the military, during the time when access is granted and up