Developed for Customs and Border Protection (CBP), the app was made available to local law enforcement as a field-level biometric tool to identify individuals in real time. Under these agreements, trained local law enforcement officers can check immigration status, issue detainers, and initiate removal proceedings under ICE supervision. What isn’t clear is why an app used by CBP is also allowed to be used by local police operating under ICE authority. Consequently, the app has raised concerns about how CBP and ICE have been deploying mobile surveillance systems without public oversight or formal disclosure, and has underscored the growing concerns about DHS’s aggressive adoption of mobile surveillance tools with little transparency or external oversight. Never mind legality.