The document discusses research on a proposed product called Tastestim that would use electrical and thermal stimulation of the tongue to produce sensations of taste like salty, sweet, sour or bitter without consuming actual food or calories. This would allow people to satisfy cravings and appetite in a healthier way. The product is aimed at users who want to be healthier but have limited time, like a student named Emma or a mechanic named Steve who is diabetic but doesn't want to give up favorite foods. The document includes links to research on virtual taste and tongue physiology, as well as branding exercises that led to naming the product Tastestim based on combining taste and stimulation.