@inproceedings{mehmood2019passive, title={Passive UHF RFID-based User Interface on a Wooden Surface}, author={Mehmood, Adnan and Vianto, Ville and He, Han and Chen, Xiaochen and Ukkonen, Leena and Virkki, Johanna and others}, booktitle={2019 Photonics \& Electromagnetics Research Symposium-Fall (PIERS-Fall)}, pages={1760--1763}, year={2019}, organization={IEEE} }