Indoor positioning in a multi-floor environment by using a smartphone is considered in this paper. The positioning accuracy and robustness of WiFi fingerprinting-based positioning are limited due to the unexpected variation of WiFi measurements between floors. On this basis. we propose a novel smartphone-based integrated WiFi/MEMS positioning algorithm based on the robust extended Kal... https://www.hindigyanvishv.com/best-flash-CoQ-Clear-100-Ubiquinol-60-Softgels-Citrus-deal-zone/