RFitness: Enabling Smart Yoga Mat for Fitness Posture Detection with Commodity Passive RFIDs

Yoga is popular in our daily lives for body fitness practice. We can practice yoga on a specific mat for body fitness. It’s important to have the smart yoga mat, which can adjust the surrounding environment based on user’s physical activities on the yoga mat. For example, we can adjust the ambient light, music and temperature based on the yoga practitioner’s pose on the yoga mat.In this paper, we present RFitness, a system that can detect the fitness posture on the yoga mat. To do so, we can attach multiple commodity passive RFID tags on the yoga mat, such that the different fitness postures can affect different RFID tags. Based on the signal strength readings from all the tags, we can estimate the yoga fitness posture using the model-driven deep neural networks. We implement the prototype of RFitness using commodity passive RFID tags and USRP reader. Our extensive experiments show that RFitness can achieve the median accuracy of 0.96.