IA HSB743

Requires law enforcement to obtain a search warrant before conducting reverse-location searches (geofence warrants) that collect location data from electronic devices within a specified geographic area and time period.

Limits reverse-location warrants to violent felony investigations where law enforcement can demonstrate an imminent, ongoing threat to public safety.

Mandates that all device data obtained through these warrants must be anonymized before being released to law enforcement, protecting the identities of device owners and users.

Defines key terms including "geofence" (virtual perimeter or geographic coordinates), "reverse-location information" (historical location data for multiple unknown devices), and "government entity" (any state or local agency including law enforcement).

Prohibits qualified immunity as a defense for law enforcement agencies that obtain reverse-location information around public buildings without a search warrant.