There is a buzz around the world about building smart cities and smart homes. Smart cities in brief can be defined as a city which uses digital technologies or information-communication technologies to make life of living beings more efficient and comfortable. Smart Home, comprising smart devices in the home context, promises enormous possibilities to our future life. At the same time, it might have its own influence to change our living habits. This paper sets to provide a way-out on how can a city and a home aspiring to become smart can really achieve it with putting up challenges that will be encountered in the path of achieving the goal.@en