Long distance RFID readers are currently used mostly for warehouse inventory tracking. Nowadays you can steer antennas using phased arrays like they use in 5G.

Long distance RFID readers are currently used mostly for warehouse inventory tracking. Nowadays you can steer antennas using phased arrays like they use in 5G. https://www.zebra.com/us/en/products/rfid/rfid-readers.html?tactic_type=SEMB&tactic_detail=AV_RFID_PortfolioEN_NA_None&utm_source=microsoft_ads,bing&utm_medium=paid_search,cpc&msclkid=98eeee07011e14f5274084836df80190&utm_campaign=MicrosoftAds%7CNA%7CUS-US%7CEN%7CPortfolio%7CBOF%7CRFID%7CNon-Brand&utm_term=long%20range%20rfid%20scanner&utm_content=RFID%20Long%20Range%20Scanners&page=1 https://www.zebra.com/us/en/products/rfid/rfid-readers.html?... Although, as I understand it, Flock itself is mostly just looking for Bluetooth, BTLE, TPMS Sensors, and Wifi devices.