This research departs from the existence of a legal vacuum in the international law concerning remote sensing. Therefore, there are no legal instruments that can protect the sensed countries, particularly least-developing and developing countries. The purpose of this study is to develop a legal concept that can be used by Indonesia in national legislation of space law. This research is a doctrinal research with qualitative analysis. This research concludes that Indonesia shall develop its national law concerning remote sensing based on the legal concept of the Data Access for sensed countries with a special consideration for developing countries. This legal concept can be established into international customary law by holding international cooperation among least-developing and developing countries.