Mood sensing jewelry has been around for some time, but Philips is hoping to get your feedback regarding their latest creation in collaboration with a European project by STELLA. The new wireless mood sensing, stick-ons called Skintile explore the wearers emotional and physiological state of mind by lighting up accordingly. They really fail to tell us what the colors mean, but the site says the sticky tattoo, "explores a range of functionalities in new product forms that are playful, ...