Technology Applications Challenges and Solutions : iot-enabled vision system for detection of tint level, supervised and semi-supervised identification of users and activities from wearable device brain signal recordings, internet of things and artificial intelligence digital world, technical and societal challenges, evolution of social iot, security issues and research challenges, user authentication, keystroke dynamics with soft biometric features, internet of nano-things forensics, performing digital forensics in nanoscale systems, aspects of ambient assisted living and its applications, communication security issues in iot medical devices, iot challenges.