The International Workshop on Privacy-Aware
Location-based Mobile Services (PALMS)

In conjunction with the 8th International Conference on Mobile Data Management

May 11, 2007, Mannheim, Germany

CALL FOR PAPERS [Download: pdf (letter), pdf (A4), txt]


Keynote Speech: TIME for Better Privacy

Alastair Beresford (University of Cambridge, UK)

ABSTRACT: The Transport Information Monitoring Environment (TIME) is an umbrella project at the University of Cambridge Computer Laboratory which is investigating how the use of computers, sensors and networks can improve transportation, with a particular focus on deploying prototypes in the city of Cambridge, England. Newer transportation schemes---such as congestion charging and pollution monitoring---often utilise mobile sensors attached to individuals or their vehicles. Therefore location information is a key component of data collection, yet this same location data often also contains private information. This talk will describe some of the privacy measures we have been developing as part of several TIME-related initiatives, ranging from improved sensing techniques and mobile sensor platforms, through to new pseudonym schemes and novel methods for controlling the disclosure of personal information.

News: Workshop Program is available
News: Extended versions of best papers will be invited to a special issue of the Journal of Location-based Services.


Matt Duckham
U. of Melbourne, Australia
Mohamed F. Mokbel
of Minnesota, USA
Silvia Nittel
of Maine, USA

PC Members
Walid Aref
Purdue University, USA
Vijay Atluri
Rutgers University, USA
Louise Barkhuus
U. of Glasgow, UK
Alastair Beresford

U. of Cambridge, UK
Elisa Bertino
Purdue University, USA
Claudio Bettini

U. of Milan, Italy
John Canny
U. of California, Berkeley
Reynold Cheng
Hong Kong Polytechnic U., HK
Max J. Egenhofer
U. of Maine, USA
Bugra Gedik
IBM Watson, USA
Marco Gruteser
Rutgers University. USA
Urs Hengartner
U. of Waterloo, Canada
Eija Kaasinen
VTT, Technical Research Centre of Finland
Panos Kalnis
National U. of Singapore, Singapore
John Krumm
Microsoft Research, USA
Lars Kulik
U. of Melbourne, Australia
Marc Langheinrich
ETH Zurich, Switzerland
Ling Liu
Georgia Tech, USA
Xuan Liu
IBM Watson, USA
Vashek Matyas
Masaryk U., Czech Republic
Dimitris Papadias
Hong Kong U. of Science and Technology, HK
Loren Terveen
U. of Minnesota, USA
Jianliang Xu
Hong Kong Baptist U., HK
Donghui Zhang
Northeastern U., USA

Chi-Yin Chow
U. of Minnesota

Theme of the Workshop

Combining the functionality of location-aware devices, wireless and cellular phone technologies, and data management results in enabling a new era of location-based mobile services that aim to provide personalized services to their customers based on their current locations. Examples of such services include location-aware emergency service, location-based advertisement, live traffic reports, and location-based store finder. Although location-based services promise safety and convenience, they threaten the privacy and security for their customers as they rely mainly on the knowledge of their customers' location information. The current model of location-based services trades the customers' privacy with the service. If a user wants to keep her private location information, she has to turn off her location-aware device and temporarily unsubscribe from the service. Recent social studies show that customers become more privacy-aware as they tend to avoid using location-based services in order to keep their privacy. As a result, there is a real concern that the privacy issues may hinder the technological advances in location-based services.

Workshop Goals

Location privacy is a cross cutting area as it crosses social science, communications, location-based services, databases, and security. The main goal of the workshop is to gather scientists from these areas together to foster the collaboration among such interdisciplinary areas and sparkle discussion on open topics related to location privacy.

The workshop aims aim to address the location privacy from different aspects, starting from social studies of users concerns, going through different models of representing location privacy, location anonymization techniques, imprecise locations, query processing for private or imprecise location data, and ending with a study of various attack models for private location data. The workshop aims also to discuss location privacy in various environments that include using GPS, RFID, or sensor networks. The workshop will be organized in a way to allow close interaction among participants and to sparkle discussions and thoughts among various research communities.

Workshop Scope

The scope of this workshop includes but is not limited to the following topics:
  • Context-aware Privacy
  • Geoprivacy
  • Imprecision in Mobile Computing
  • Legislative Approaches for Protecting Location Privacy
  • Location Anonymity Techniques
  • Models for Simultaneous Provision of Security and Privacy
  • Non-intrusive Location Tracking
  • Privacy Attack Models
  • Privacy in Sensor Networks
  • Privacy in Ubiquitous Computing
  • Query Processing for Private Location Data
  • Social Studies for Location Privacy
  • User Perceptive to Location Privacy

Paper Submissions

All submissions must be original unpublished work written in English that is currently not under review at another venue. Accepted papers will be published in IEEE workshop proceedings as 5 pages in IEEE style format (LaTex macros, Word format). At least one of the authors of the accepted paper must register for the workshop and present the paper. Submissions of novel ideas and positions that can spark discussion among the attendees are strongly encouraged. Papers must be submitted to by e-mails. Authors of best workshop papers will be invited to revise and extend their submission to a special issue of the Journal of Location-based Services.


Important Dates (Tentative)

Submission deadline: February 20, 2007 11:59PM (PST) (Extended)
Notification: March 25, 2007
Camera-ready due: March 30, 2007
Workshop date: May 11, 2007
Last updated: April 22, 2007