Now showing items 1-8 of 8

    • Change blindness in proximity-aware mobile interfaces 

      Brock, Michael Oliver; Quigley, Aaron John; Kristensson, Per Ola (ACM, 2018-04-21) - Conference item
      Interface designs on both small and large displays can encourage people to alter their physical distance to the display. Mobile devices support this form of interaction naturally, as the user can move the device closer or ...
    • Investigating tilt-based gesture keyboard entry for single-handed text entry on large devices 

      Yeo, Hui Shyong; Phang, Xiao-Shen; Castellucci, Steven J.; Kristensson, Per Ola; Quigley, Aaron John (ACM, 2017-05-02) - Conference item
      The popularity of mobile devices with large screens is making single-handed interaction difficult. We propose and evaluate a novel design point around a tilt-based text entry technique which supports single handed usage. ...
    • Memorability of pre-designed and user-defined gesture sets 

      Nacenta, Miguel; Kamber, Yemliha; Qiang, Yizhou; Kristensson, Per Ola (ACM, 2013-04-27) - Conference item
      We studied the memorability of free-form gesture sets for invoking actions. We compared three types of gesture sets: user-defined gesture sets, gesture sets designed by the authors, and random gesture sets in three studies ...
    • Multi-touch pinch gestures: performance and ergonomics 

      Hoggan, Eve; Nacenta, Miguel; Kristensson, Per Ola; Williamson, John; Oulasvirta, Antti; Lehtiö, Anu (ACM, 2013-10-06) - Conference item
      Multi-touch gestures are prevalent interaction techniques for many different types of devices and applications. One of the most common gestures is the pinch gesture, which involves the expansion or contraction of a finger ...
    • Multi-touch rotation gestures : performance and ergonomics 

      Hoggan, Eve; Williamson, John; Nacenta, Miguel; Kristensson, Per Ola; Lehtiö, Anu (ACM, 2013-04-27) - Conference item
      Rotations performed with the index finger and thumb involve some of the most complex motor action among common multi-touch gestures, yet little is known about the factors affecting performance and ergonomics. This note ...
    • Performance and user experience of touchscreen and gesture keyboards in a lab setting and in the wild 

      Reyal, Shyam Mehraaj; Zhai, Shumin; Kristensson, Per Ola (ACM, 2015-04-18) - Conference item
      We study the performance and user experience of two popular mainstream mobile text entry methods: the Smart Touch Keyboard (STK) and the Smart Gesture Keyboard (SGK). Our first study is a lab-based ten-session text entry ...
    • User-defined interface gestures : dataset and analysis 

      Grijincu, Daniela; Nacenta, Miguel; Kristensson, Per Ola (ACM, 2014-11-16) - Conference item
      We present a video-based gesture dataset and a methodology for annotating video-based gesture datasets. Our dataset consists of user-defined gestures generated by 18 participants from a previous investigation of gesture ...
    • VelociTap : investigating fast mobile text entry using sentence-based decoding of touchscreen keyboard input 

      Vertanen, Keith; Memmi, Haythem; Emge, Justin; Reyal, Shyam Mehraaj; Kristensson, Per Ola (ACM, 2015-04-18) - Conference item
      We present VelociTap: a state-of-the-art touchscreen keyboard decoder that supports a sentence-based text entry approach. VelociTap enables users to seamlessly choose from three word-delimiter actions: pushing a space key, ...