Localization and Tracking Challenges >RSS cannot provide accurate localization especially for UHF tags Need dense reference tags Need specified hardware,like USRP Require the predefined tag or reader movement 45 D tagged docs Peak RSSI ·-RSSI of Tag01 50 .RSSI of Tag 02 55 60 65 MobiTagbot 70 Movin -75 0 200040006000800010000120001400016000 direction Moving direction Time (ms) STPP (NSDI 2015) MobiTagbot(MobiSys 2016)Localization and Tracking Challenges à RSS cannot provide accurate localization especially for UHF tags à Need dense reference tags à Need specified hardware, like USRP à Require the predefined tag or reader movement STPP (NSDI 2015) MobiTagbot (MobiSys 2016)