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2. Apple Inc. 2016. UIApplicationBackgroundFetchIntervalMinimum. (2016). https://developer.apple.com/reference/uikit/uiapplicationbackgroundfetchintervalminimum. Apple Inc. 2016. UIApplicationBackgroundFetchIntervalMinimum. (2016). https://developer.apple.com/reference/uikit/uiapplicationbackgroundfetchintervalminimum.
3. Daniel L. Ashbrook. 2010. Enabling Mobile Microinteractions. Ph.D. Dissertation. Atlanta GA USA. Advisor(s) Starner Thad E. AAI3414437. Daniel L. Ashbrook. 2010. Enabling Mobile Microinteractions. Ph.D. Dissertation. Atlanta GA USA. Advisor(s) Starner Thad E. AAI3414437.
4. Uncomfortable user experience
5. The office smartwatch