Images of an automated New York Police Department (NYPD) 'digidog' equipped with surveillance cameras responding to a hostage situation drew complaints from the local community, rights activists and politicians. 

The NYPD used the Boston Dynamics-manufactured Spot dog to surveil a house in the Bronx in which two men were holding two others hostage. The suspects were later arrested. 

The incident prompted concerns about the technical capabilities of the robot, the scope for misuse and abuse, and its use in lower-income communities. 

It also raised questions about transparency, with the ACLU asking why the NYPD had failed to list it on its public disclosure of surveillance devices.