An open-source R toolkit that processes raw WiFi probe request data into five urban analytics metrics: Location, Count, Track, Identity, and Activities. What's included Full documentation as a Quarto Book: https://urbanjuhyeon.github.io/urban-wifi-sensing-toolkit/ R scripts for all five metrics Sample datasets for hands-on tutorials (see workflow/ directory) Sample data sample_raw.zip — raw SQLite probe data for aggregation tutorial sample_main.zip — WiFi detections, sensor locations, and POI for metric extraction (Ch. 4) sample_loc.zip — GPS ground truth and WiFi detections for location accuracy validation Requirements R ≥ 4.1, see Installation for full setup instructions.