Localization and Tracking Challenges >RSS cannot provide accurate localization especially for UHF tags Need dense reference tags ▣ RF Readerl e m RF-Compass (MobiCom 2013) 口 g Left wall Ref tag Right wall Desired tag Ref tag RF non-line-of-sight k 1 Original Reference Tags Perspective1】 Pinlt's receiver Perspective 2 ☐New Reference Tags ●Tracking Tag PinIt (SIGCOMM 2013) LANDMARK(PerCom 2003)Localization and Tracking Challenges à RSS cannot provide accurate localization especially for UHF tags à Need dense reference tags RF-Compass (MobiCom 2013) PinIt (SIGCOMM 2013) LANDMARK (PerCom 2003)