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Future ubiquitous computing devices will need to communicate with other smart devices in an ad hoc fashion , using minimal power and possibly without the help of a central infrastructure. However, so far no single communication technology has established itself in the field of ubiquitous computing: many current wireless communication technologies seem to(More)
While recent surveys often cite people who have experienced some form of privacy invasion, the exact nature of such invasions remains elusive. Yet in order to build ubiquitous computing systems that will respect the privacy of the individual, it is crucial to understand when it is exactly that people feel their privacy has been invaded. This paper motivates(More)
Most online advertisement systems in place today use the concept of consumer targeting: Each user is identified and, according to his or her system setup, browsing habits and available off-line information, categorized in order to customize the advertisements for highest user responsiveness. This constant monitoring of a user's online habits, together with(More)
— The fear of unauthorized, hidden readouts has dominated the RFID privacy debate. Virtually all proposed privacy mechanisms so far require consumers to actively and explicitly protect read access to their tagged items – either by jamming rogue readers or by encrypting or pseudonymizing their tags. While this approach might work well for activists and(More)
Augmented game environments use unobtrusively embedded technology to augment traditional games with virtual information and novel interaction capabilities. This article establishes and discusses a set of guidelines for designing and implementing such environments, based on our experiences in creating digital augmentations of existing play environments. We(More)
With the availability of GPS receivers in more and more mobile handsets, location sharing has become the next mobile killer-app. Services like Google Latitude or Yahoo's FireEa-gle are used by thousands of subscribers to share their current location in real-time with their family, their friends, or even publish it online, while Sense Network's CitySense(More)
Visions of ambient intelligence and ubiquitous computing involve integrating tiny microelectronic processors and sensors into everyday objects in order to make them " smart. " Smart things can explore their environment, communicate with other smart things, and interact with humans, therefore helping users to cope with their tasks in new, intuitive ways.(More)
Today's RFID protocols that govern the communication between RFID readers and tags are solely optimized for performance , but fail to address consumer privacy concerns by supporting the fair information practices appropriately. In this paper we propose a feature set that future privacy-aware RFID protocols should include in order to support the fair(More)