SweetBuildingGreeter: A Demonstration of Persuasive Technology for Public Space

  • Ted SelkerEmail author
  • Shih-Yuan Yu
  • Che-Wei Liang
  • Jane Hsu
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9175)


This paper shows how a persuasive interactive system can impact community behavior. SweetBuildingGreeter includes an interactive display and a gumball dispenser with environmental sensors. It provides media and tangible rewards. It has been located in buildings’ public entry areas to encourage people to be conscious of and to empower saving energy. What makes the system ignored or engaging? The first experiment attracted participants to fill out a questionnaire to dispense candy and display problems which could be fixed in the building. Newcomers to the building filled out the questionnaire, but few returned to do it again. The second experiment provided images of energy savings and was effective at making people aware of energy issues, but it did not change their likelihood of using the system. Soliciting people with sound was more effective. This was especially true in a case where people had earlier negative experiences.


Persuasive computing Green technology ACM H.5.2 information interfaces and presentation UI styles Input devices and strategies 



This paper is a tribute to the generosity of the Japanese government for paying for Chihiro Suga to come work at CMU Silicon Valley for a summer to create the first Sweetfeedback system and software. Equally valuable was Jane Hsu, chairperson of National Taiwan University, supporting Ken 梁哲瑋, and Yu Louis’ trip to CMU Silicon Valley to work on SweetFeedback and SweetBuilding.


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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Ted Selker
    • 1
    Email author
  • Shih-Yuan Yu
    • 2
  • Che-Wei Liang
    • 2
  • Jane Hsu
    • 2
  1. 1.University of CaliforniaBerkeleyUSA
  2. 2.National Taiwanese UniversityTaipeiTaiwan

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