The article reports on cases of police chiefs using Flock's license plate reader system to track their romantic partners and rivals, highlighting the need for warrants to prevent such abuses. Flock claims its system tracks vehicles, not people, but the documented cases show that it can be used to track individuals. The article argues that the requirement of warrants for LPR use is necessary to prevent such abuses. The use of Flock's system by police chiefs and other law enforcement officials has raised concerns about privacy and the potential for abuse.