CLT: Contactless Gate System based on Localization and Transactions over Ultra-wideband
Junyoung Choi, Jinwook Seo, Joohyun Lee · 2024
As commercial interest in proximity services increased, the development of various wireless localization techniques was promoted. In line with this trend, Ultra-wideband (UWB) is emerging as a promising solution that can realize proximity services thanks to its centimeter-level localization accuracy. One of the proximity services is UWB contactless gate (UCG) that a user can freely pass the gate without tap for payment such as NFC. In this paper, a new paradigm of gate system is proposed, termed CLT, to realize UCG by designing and optimizing the localization accuracy and transactions over UWB. We implemented whole components for CLT on Samsung Galaxy S23+ and Ultra for mobile device. The UWB anchors and UCG are also implemented for localization and transactions, respectively. CLT achieved an localization accuracy of 15.1 cm and 959.6 ms in transaction delay.