I don't mind being logged, but want to remain in control: a field study of mobile activity and context logging Tuula Kärkkäinen, Tuomas Vaittinen, Kaisa.

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Presentation transcript:

I don't mind being logged, but want to remain in control: a field study of mobile activity and context logging Tuula Kärkkäinen, Tuomas Vaittinen, Kaisa Väänänen-Vainio-Mattila CHI 2010

Lifelogging Lifelogging: recording information about person’s activities and content of what was done/said, etc. Lifelogging with smartphones: GPS, bluetooth, WiFi, messages, phone calls, web browsing history, music, voice calls, etc. Motivation: so far no extensive UX studies on lifelogging

Study Setup 13 participants w/ 8-11 weeks (in Finland) Study started at the 6 th week (till 9 th week) Nokia N95 phone with the following setup: – ShoZu: getting GPS coordinates to the photos and videos and for uploading them to Flickr – Simple Context Collector: Location tracking data (GPS, GSM cell IDs) Bluetooth scanning data WiFi scanning data Voice phone calls Text messages Music tracks

Study Setup Web application for browsing the logged information A user can share data (photo, video, location, music) with friends (displayed in the lifeline view) (Map View)

Study Setup Participant setup: – Group 1: 4 males + 1 female (all close friends) – Group 2: 2 brothers who share the apt – Group 3: acquaintances (4 males + 1 female) Participants were interviewed twice Quantitative survey at the end of the trial – AttracDiff 2: pragmatic quality, hedonic quality, etc. – Roto & Rautava: utility, usability, social value, enjoyment

General experiences on mobile phone activity logging Users were only a little disturbed by the logging After the logging client had been running on the users’ phones for a few days, users stopped paying attention to the logging. Logging created positive experiences for users “…In a way you can analyze your lifestyle more. And similarly what your friends are doing, you can find common interests that you might not have realized before.” Yet, there are still some concerns with battery consumption and privacy violation

Experiences on the Logged Content Types and Actions The logged data makes me curious: 6 (mostly agree) The system logs all the data I want: 4.5 – Users want to log more information (e.g., status, video calls, traffic etc). The system logs data that I don’t want in the questionnaire: 4 (neither agree nor disagree)

Sense of Privacy Most of the users felt that their privacy was not threatened, despite using the logging system Yet, people concern with potential leakage (e.g., stolen password?) Users want control what to log and when to log (even uploading, deleting); i.e., fine-grained control preferred Text messaging is deemed to be most private (some didn’t want to log at all) People shared photos (among friends via Flickr) Few shared location tracks with friends (e.g., trip information sharing)

Changes in User Behavior during the Trial Awareness of the data logging encourages me to actively gain new experiences: 5 (mostly agree) – Logging increased communications among friends – Logging encouraged taking more photos and playing with GPS log data Awareness of the logging makes me restrict my doings: 2 (mostly disagree)