© 2014 IEEE. There are various regions of applications for wireless sensor networks (WSNs). In this demonstration, we are using a WSN to build an efficient and smart parking system for vehicles. Our application will use light sensors to automatically determine the use of parking spaces in a parking area and calculate billable parking time while also providing a useful overview of occupied and free parking spaces to vehicle operators. Such a system can provide increased driver comfort and reduce costs in parking space operation by allowing drivers to easily decide on where to park, while the used components only generate low costs for the operator.