In order to provide personalized transaction assistance using sensor networks, a user interacts with the sensor networks within, for example, a retail environment, using a wireless mobile device. The user is provided with timely, convenient, and personalized information related to products for sale within the retail environment. More specifically, for example, a message exchange between the sensor network and the mobile device is automatically initiated, such that the user is provided with information regarding, for example, an availability, description, price, and/or location of products in which the user has previously expressed a purchase interest. In this way, a probability of a sale is increased for the retail environment, as well as a likelihood that the user will be happy with the purchase experience, and these benefits are provided with a minimal amount of effort required of the user.