This article aims to highlight central challenges faced by planners of smart cities, integrated with ICT, providing a framework to assess the impact of ICT on the form and function of cities, through its effect on people’ s spatial behavior patterns. It demonstrates that the ability to simulate individual agents’ behavior through Agent-Based Models (ABM) and how it is affected by enhanced spatial awareness facilitated by ICT, could result in a new understanding of how a city is used, making visible less predictable use patterns and contributing to a more accountable design of urban form and function by planners.