In the preferred embodiment, a hand-held computer prepares and monitors a goal-oriented weight, nutrition and exercise control program. Visual and audio prompts tell users when to eat and exercise, and provide suggestions for what to eat. The computer assists the user in setting safe goals for desired...http://www.google.ca/patents/US5673691?utm_source=gb-gplus-sharePatent US5673691 - Apparatus to control diet and weight using human behavior modification techniques 
