The Mainland Travel Permit for Taiwan Residents, also known as a Taiwan compatriot permit (台胞证), is the travel document issued by China's Ministry of Public Security (MPS) to nationals of the Republic of China (ROC, also known as Taiwan) with household registration in Taiwan for entry into mainland China. Passports issued by the ROC are not considered to be valid travel documents by mainland China. This permit allows Taiwanese to travel to and from China and is also considered and widely used as an identity document for Taiwanese in China.