WiFi Mesh Ghost Signal Dataset

27 sessions / ~4.1 million 250 ms analysis windows of CSI amplitude and RSSI from a 13-node ESP32 WiFi mesh (155 links), with camera-derived ground-truth occupancy metadata (presence, person count, positions, per-detection bounding boxes and confidences - no video or images are included). Collected 2026-02-13 to 2026-02-22. Accompanies the paper 'Ghost Signals in WiFi Mesh Sensing: Characterization and Detection at Scale'. FILE LAYOUT: each .tar unpacks to sessions// containing manifest.json and samples_*.jsonl.gz; ground_truth.tar unpacks to ground_truth/. Place all unpacked directories beside load_dataset.py to reproduce the documented layout. See DATASHEET.md (Gebru et al. datasheet) for composition, collection, consent and the label-timestamp erratum; README.md for the loader and citation.