Instant Personalization & Temporary Ownership of Handheld Devices Workshop for Mobile Computing Systems and Applications 2004 Jürgen Bohn ETH Zurich, Switzerland bohn@inf.ethz.ch
Impersonal Stationary Devices + Simple deployment, setup, configuration (generic functionality) + Support for sharing and pooling of devices Public Terminal – Lack of personalization limits efficiency and Public Phone ease of use Motivation – Limited accessibility Plain Phone Instant Personalization, J. Bohn, WMCSA 2004 2
Personal Stationary Devices + Increased ease of use Personal and efficiency by means Programmable Cable Phones of personalization and customization + Improved accessibility and convenience… – …but still limited in numbers Motivation – Restricted sharing and pooling of devices (smaller Personal Home/Office PC and closed user groups) Instant Personalization, J. Bohn, WMCSA 2004 3
Personal Mobile Devices + Rapidly proliferating and even becoming everyday live commodities + Portability significantly improves accessibility and enables anywhere/anytime Portable utilizability Mobile Computers – Exclusive personal (Smart) use and ownership strongly Phones limits sharing and pooling Personal Motivation Devices – High complexity of data management PDAs – Ever shorter lifecycles Instant Personalization, J. Bohn, WMCSA 2004 4
Observations � Particular strength of handhelds = portability, device-specific functionality, advanced personalization and customization capabilities � Individuality of handheld devices is strongly determined by personal meta data – individual preferences, device and Motivation application settings, user names and passwords, etc. Instant Personalization, J. Bohn, WMCSA 2004 5
Problem & Challenge � Problem: Increasing dependence on mobile devices and services at work and in everyday life situations � Challenge: Ensure availability of personalized devices and the accessibility of services they deliver – devices may be left behind unintentionally, Motivation run out of energy, get lost, stolen, break beyond repair… Instant Personalization, J. Bohn, WMCSA 2004 6
Remainder of the Talk � Instant Personalization and � Instant Personalization and Temporary Ownership Temporary Ownership � Horizontal vs. Vertical � Horizontal vs. Vertical Diversification Diversification � Prototype Description � Prototype Description � Conclusion � Conclusion Outlline Instant Personalization, J. Bohn, WMCSA 2004 7
Instant Personalization (IP) � Free user from dependence on individual personal mobile devices… � …while preserving the benefits he expects of personalization and customization! Instant Personalization � Instant personalization of mobile devices � Enables user to take temporary ownership of arbitrary devices on demand � Boosts number of devices potentially available to the user from one to “infinity” Instant Personalization, J. Bohn, WMCSA 2004 8
Basic User Experience 1. Pick up arbitrary blank device 2. Log on to Instant Personalization Server (IPS) � triggers instant personalization procedure � individual preferences & settings (meta data) and personal user data are installed on the device Instant Personalization 3. Utilize personalized device � ideally: temporarily owned device indistinguishable from a permanently owned personal device 4. Release device � modified user/meta data are written back to IPS � device is cleared of any personal user/meta data Instant Personalization, J. Bohn, WMCSA 2004 9
Benefits + Interchangeability of handheld devices increases accessibility of personalized device functionality, and… + …the availability of personal user data, Instant Personalization facilitating anytime, anywhere access + Provides support for the sharing and pooling of handheld devices + Personalization outlasts device lifecycle Instant Personalization, J. Bohn, WMCSA 2004 10
Benefits (cont.) + Support for disconnected operation + Recovery of personal user data (from physically unavailable but network connected devices) Instant Personalization + Protection of confidentiality of personal user data (by means of automatic or server initiated release) + Support for periodic data backup Instant Personalization, J. Bohn, WMCSA 2004 11
Cross-Platform Personalization � Personalization procedure depends on – type and capabilities of the mobile device – operating system – installed standard applications � Challenge: widen applicability of personal Instant Personalization data accross platforms – standardized application interfaces • e.g., Microsoft Pocket Outlook Object Model (POOM) – personalization profiles • defining structure and vocabulary of personal user settings and preferences Instant Personalization, J. Bohn, WMCSA 2004 12
Trust and Security Challenges � Authentication via username and password – fingerprint hardware in today’s off-the-shelf devices is insecure and cannot be trusted � not useful for secure authentication (yet) – secure communication channels (SSL) � Challenge: how to ensure that an anonymous mobile device has not been tampered with? – promising approach: Trusted Platform Model (TPM) by the Trusted Computing Group (TCG) � Means of secure authentication – one-time authentication schemes – trusted hardware tokens – challenge-response mechanisms � Challenge: protect data confidentiality – prevent unauthorized data recovery after device was released Instant Personalization, J. Bohn, WMCSA 2004 13
Outline � Instant Personalization and Temporary Ownership � Horizontal vs. Vertical Diversification � Prototype Description � Conclusion Outlline Instant Personalization, J. Bohn, WMCSA 2004 14
Ubiquitous Data Access My personal PDA My personal Comparison with Related Concepts My personal Mobile Portable (Smart) Computer Phone Ubiquitous Data Access Middleware (data selection, synchronization, hoarding) Background Server User Data Instant Personalization, J. Bohn, WMCSA 2004 15
Ubiquitous Data Access My personal PDA My personal Comparison with Related Concepts My personal Mobile Portable (Smart) Computer Phone Ubiquitous Data Access Middleware (data selection, synchronization, hoarding) Background Server User Data Instant Personalization, J. Bohn, WMCSA 2004 16
Ubiquitous Data Access My personal PDA My personal Comparison with Related Concepts My personal Mobile Portable (Smart) Computer Phone Ubiquitous Data Access Middleware (data selection, synchronization, hoarding) Background Server User Data Instant Personalization, J. Bohn, WMCSA 2004 17
Ubiquitous Data Access My personal PDA My personal Comparison with Related Concepts My personal Mobile Portable (Smart) Computer Phone Ubiquitous Data Access Middleware (data selection, synchronization, hoarding) Background Server User Data Instant Personalization, J. Bohn, WMCSA 2004 18
Ubiquitous Data Access My personal PDA My personal Comparison with Related Concepts My personal Mobile Yields a Portable (Smart) Computer Horizontal Phone Diversification of Data Access Accross Platforms Ubiquitous Data Access Middleware (data selection, synchronization, hoarding) Background Server User Data Instant Personalization, J. Bohn, WMCSA 2004 19
Instant Personalization Any Any Portable Any PDA Mobile Computer Comparison with Related Concepts (Smart) Phone Instant Personalization Service Background Server Meta Data Meta Data Meta Data User Data User Data User Data Instant Personalization, J. Bohn, WMCSA 2004 20
Instant Personalization Any Any Portable Any PDA Mobile Computer Comparison with Related Concepts (Smart) Phone Instant Personalization Service Background Server Meta Data Meta Data Meta Data User Data User Data User Data Instant Personalization, J. Bohn, WMCSA 2004 21
Instant Personalization Any Any Portable Any PDA Mobile Computer Comparison with Related Concepts (Smart) Phone Instant Personalization Service Background Server Meta Data Meta Data Meta Data User Data User Data User Data Instant Personalization, J. Bohn, WMCSA 2004 22
Instant Personalization Any Any Portable Any PDA Mobile Computer Comparison with Related Concepts (Smart) Phone Instant Personalization Service Background Server Meta Data Meta Data Meta Data User Data User Data User Data Instant Personalization, J. Bohn, WMCSA 2004 23
Instant Personalization PDA Horizontal and Any Yields a Any Portable Any Mobile Computer Comparison with Related Concepts Vertical Vertical (Smart) Diversification Diversification of Phone are Orthogonal Access to Personal Concepts that Data and to blend well with Customized Instant Personalization Service each other! Device Functionality for Background Server Devices of the Meta Data Meta Data Meta Data same Kind . User Data User Data User Data Instant Personalization, J. Bohn, WMCSA 2004 24
Outline � Instant Personalization and Temporary Ownership � Horizontal vs. Vertical Diversification � Prototype Description � Conclusion Outlline Instant Personalization, J. Bohn, WMCSA 2004 25
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