It is with great pleasure that we introduce the first issue of the IEEE Journal on Indoor and Seamless Positioning and Navigation (J-ISPIN). J-ISPIN is a gold open-access publication of the IEEE Sensors Council, the IEEE Signal Processing Society, and the Instrumentation and Measurement Society. The multidisciplinary J-ISPIN provides a platform for Open Access publishing in response to the growing demand for Open Access. Thus, this first issue represents an important milestone for indoor and seamless positioning publishing.