Because i carry my cell phone anyway: Functional location-based reminder applications

Pamela J. Ludford, Dan Frankowski, Ken Reily, Kurt Wilms, Loren G Terveen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

90 Scopus citations


Although they have potential, to date location-based information systems have not radically improved the way we interact with our surroundings. To study related issues, we developed a location-based reminder system, PlaceMail, and demonstrate its utility in supporting everyday tasks through a month-long field study. We identify current tools and practices people use to manage distributed tasks and note problems with current methods, including the common "to-do list". Our field study shows that PlaceMail supports useful location-based reminders and functional place-based lists. The study also sheds rich and surprising light on a new issue: when and where to deliver location-based information. The traditional 'geofence' radius around a place proves insufficient. Instead, effective delivery depends on people's movement patterns through an area and the geographic layout of the space. Our results both provide a compelling demonstration of the utility of location-based information and raise significant new challenges for location-based information distribution.

Original languageEnglish (US)
Title of host publicationCHI 2006
Subtitle of host publicationConference on Human Factors in Computing Systems, Conference Proceedings SIGCHI
Number of pages10
StatePublished - Jul 17 2006
EventCHI 2006: Conference on Human Factors in Computing Systems - Montreal, QC, Canada
Duration: Apr 22 2006Apr 27 2006


OtherCHI 2006: Conference on Human Factors in Computing Systems
CityMontreal, QC


  • Cell phone
  • Lists
  • Location-based information delivery
  • Location-based reminder
  • PIM
  • Ubiquitous computing


Dive into the research topics of 'Because i carry my cell phone anyway: Functional location-based reminder applications'. Together they form a unique fingerprint.

Cite this