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In this paper, we propose CentiTrack, the first centimeter-level passive gesture tracking system that works with only three commodityWiFi devices, without any extra hardware modifications or wearable sensors ... Extensive experiments show that CentiTrack is superior in terms of tracking accuracy, sensing range and device cost, compared with the state-of-the-arts. ... CONCLUSION In this paper, we propose CentiTrack, the first passive gesture tracking system with only three commodity WiFi devices, which achieves centimeter-level accuracy without any dedicated devices ...arXiv:2011.06896v1 fatcat:t2rf4ymgsfaozh2curgx7s2o3u