Si-FI: Wi-Fi BFI Dataset for Simultaneous Multi-Subject HAR

This dataset enables advanced Wi-Fi sensing applications, including multi-subject monitoring for home surveillance, remote healthcare, and entertainment. It focuses on Beamforming Feedback Information (BFI) as a proxy for Channel State Information (CSI), eliminating the need for firmware modifications and enabling single-capture data collection across multiple channels between an access point (AP) and stations (STAs). Collected in three environments, this dataset involves three subjects performing 20 distinct activities, facilitating generalization over unseen environments and individuals.