Relating to the definition of a designated law enforcement office or agency for purposes of certain laws governing the installation and use of tracking equipment and access to certain communications.

HB 3400 amends Texas law to define which law enforcement entities qualify as "designated" for rules about tracking equipment and communications access. It specifies that designated offices include: county sheriff's departments in counties with 500,000+ residents, municipal police departments in cities with 200,000+ residents, and the Inspector General offices of the Texas Department of Criminal Justice and Texas Juvenile Justice Department. The bill clarifies which agencies must follow existing legal procedures when using tracking technology or accessing communications. This definition change takes effect September 1, 2025.