EMOTIONAL ENGAGEMENT with a product is by far the most compelling reason behind most purchasing decisions. A designer has to have a purpose and the forethought to make something for effect. They need to have a basic understanding of human behavior and psychology in order to make it easy for people to participate and be captivated by the product at hand. Just as the physical requirements of any device must be met, when you succeed in eliciting or heightening emotional reactions in addition to a device’s functionality you are ahead of the game. When design meets behavior the result is an exceptional product.