(Telecompaper) Google has announced a multi-year smart home cooperation deal with ADT, the provider of security and alarm systems, under which it will buy a 6.6 percent stake in the company for USD 450 million. As part of the agreement, ADT's 20,000 technicians will sell and install Google devices like Nest Cameras and Nest Hub Max, powered by Google Assistant. Nest devices, powered by Google's machine learning capabilities, will also enhance ADT's security monitoring and become the cornerstone of ADT's smart home offering.