Since the development of MEMS fabrication technology becomes mature, micro-scale systems/devices are successfully fabricated for various measurement applications in order to make measurement more stable, accurate, and reliable. For the development of tactile sensors, a number of works have been reported recently. In this review article, in-depth discussions of the tactile sensors and their applications to plantar pressure measurement are provided. These recent developments form a solid foundation for the shoe-integrated sensor system for long-distance gait analysis.