Another paper on handling privacy in Ubicomp applications.T he objective of Ubiquitous Computing is: Technology should be extended in a fundamental manner that removes any conscious awareness of technology.

With the advancement in technology there is natural push towards developing a Ubiquitous Computing environment. But these technologies are introducing privacy risks faster than the time required to develop legal and social norms, to handle these privacy risks. Consequently many Ubicomp systems are being rejected due to privacy concerns. Example: Active Badges for location sensing for locating nurses in hospital is considered to be a surveillance mechanism, albeit they have some advantages. For similar privacy concerns many Ubicomp apps are not being deployed in spite of having the technical capability to implement them.

Earlier research work in privacy concentrated on providing anonymity and securing the personal data. In Ubicomp environment, users are willing to share their data but need control over what is being shared.

The authors have developed Confab toolkit which is “based on analysis of user needs and interaction design for ubicomp privacy”. It provides foundation for developers to build privacy sensitive applications.

Problems with personal privacy:
* It is hard to analyze privacy needs. The paper presents end user needs gathered from various sources which should help us understand privacy needs.
* UI for privacy: List of pitfalls in designing UI for privacy – that are still being made.
* Implementation of privacy sensitive systems: Design, implementation, and evaluation of confab toolkit

Three layers in Confab toolkit:
* Physical/sensor layer
* Infrastructure layer
* Presentation layer

* Privacy is often thought after the applicaitons are developed
* Privacy is inhibiting deployment of ubicomp technologies
* Little support guidance exists
* Privacy uses are likely to increase from ubicomp technologies

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