Low-Cost Surveillance Robot Using Raspberry Pi Introduction The progression in the field of Artificial Intelligence, Big Data Analytics and Sensor Fusion combined with miniaturized computing is not only helping Fortune 500 companies in better operational management but also helping Law Enforcement Agencies in Real-time Monitoring and action, all these technological changes are sprouting seed of change in different ways in our life. Around the world, multiple government and private organizations like Tesla, Google, Facebook, and Uber are investing in autonomous vehicles capable for plying on busy roads. Tesla's fully self-driven Model S car is available for purchase. Digital Voice Assistants like Siri , Cortana , and Google Assistant are changing the way we interact with our mobile phone, every organization is investing in Chat Bots to automate multiple manual activities. Amazon Alexa, Google Home or open-source Mycroft Mark 1 are examples of voice-assistant