The city of Boston has been taken to task by the ACLU over concerns about a roll-out of thermal imaging cameras being used to monitor energy efficiency inside homes. A pilot program to take aerial and street-level photos of heat loss in Boston was part of a scheme to encourage participation in home energy improvement programs, as well as to drive consumers towards green companies.

According to CBS, the project had been halted following public outcry about invasions of privacy, namely that “infrared cameras would reveal information about what’s going on inside the homes.” Further objections have been raised about potential violations of the Fourth Amendment (but what’s that anyway?). Officials reportedly “planned on sharing the photos and analysis with homeowners, and were hoping the findings would increase enrollment in efficiency programs and also create business opportunities.”