Towards utilising one-handed multi-digit pressure input

Wilson, Graham; Brewster, Stephen; Halvey, Martin

doi:10.1145/2468356.2468591

Cited by 19 publications

(12 citation statements)

References 13 publications

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“…Hwang et al [11] state that force input can free users from repetitive movements (e.g. flicking) as well as free up the non-dominant hand [10,26].…”

Section: Related Workmentioning

confidence: 99%

“…Holman and Hollatz [10] and Wilson et al [26] experiment with using the edges of mobile devices to apply force input. Wilson et al [26] carried out a comparative user study with normal touch screen gestures, and found that workload ratings remained the same, whilst force input was slightly faster for carrying out tasks such as zooming and rotation.…”

Section: Force Input With Mobile Devicesmentioning

confidence: 99%

See 1 more Smart Citation

An Empirical Characterization of Touch-Gesture Input-Force on Mobile Devices

Taher

Alexander

Hardy

et al. 2014

Proceedings of the Ninth ACM International Conference on Interactive Tabletops and Surfaces

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Designers of force-sensitive user interfaces lack a groundtruth characterization of input force while performing common touch gestures (zooming, panning, tapping, and rotating). This paper provides such a characterization firstly by deriving baseline force profiles in a tightly-controlled user study; then by examining how these profiles vary in different conditions such as form factor (mobile phone and tablet), interaction position (walking and sitting) and urgency (timed tasks and untimed tasks). We conducted two user studies with 14 and 24 participants respectively and report: (1) force profile graphs that depict the force variations of common touch gestures, (2) the effect of the different conditions on force exerted and gesture completion time, (3) the most common forces that users apply, and the time taken to complete the gestures. This characterization is intended to aid the design of interactive devices that integrate force-input with common touch gestures in different conditions.

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“…Hwang et al [11] state that force input can free users from repetitive movements (e.g. flicking) as well as free up the non-dominant hand [10,26].…”

Section: Related Workmentioning

confidence: 99%

Section: Force Input With Mobile Devicesmentioning

confidence: 99%

An Empirical Characterization of Touch-Gesture Input-Force on Mobile Devices

Taher

Alexander

Hardy

et al. 2014

Proceedings of the Ninth ACM International Conference on Interactive Tabletops and Surfaces

View full text Add to dashboard Cite

show abstract

“…They found that pressure input was not only a suitable alternative but it was also faster than the traditional two-finger pinch gesture. Wilson, Brewster, and Halvey [20] explored the use of one handed pressure input by adding force sensors to the back of a mobile phone. They were able to demonstrate the potential for increasing the input options provided by a single sensor by assigning functions to different levels of pressure.…”

Section: Pressure-sensitive Inputmentioning

confidence: 99%

The gest-rest

Carrington

Hurst

Kane

2014

Proceedings of the 16th International ACM SIGACCESS Conference on Computers &Amp; Accessibility - ASSETS '14

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Interacting with touch screen-based computing devices can be difficult for individuals with mobility impairments that affect their hands, arms, neck, or head. These problems may be especially difficult for power wheelchair users, as the frame of their wheelchair may obstruct the users' range of motion and reduce their ability to reach objects in the environment. The concept of chairable input devices refers to input devices that are designed to fit with the form of an individual's wheelchair, much like wearable technology fits with an individual's clothing. In this paper, we introduce a new chairable input device, the Gest-Rest, which provides a pressure-sensitive input surface that fits over a standard power wheelchair armrest. The Gest-Rest enables users to perform traditional touch screen gestures, such as press and flick, as well as pressure-based gestures such as squeezing and punching. The Gest-Rest enables multiple inputs, unlike most switches, and does not substantially change the shape of the wheelchair armrest. We present a formative evaluation in which nine wheelchair users and three clinicians tested multiple gestures using the Gest-Rest prototype, and provided recommendations for integrating the Gest-Rest with computing applications. Our study showed that our motor impaired participants were each able to perform multiple gestures using the prototype, but had some difficulty with the pre-set sensitivity settings, and would thus benefit from a more robust gesture recognizer.

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“…Similarly, Miyaki et al proposed a single-handed UI scheme "GraspZoom", by attaching a FSR at the back of a mobile device to evaluate the effectiveness of pressure based control model [15]. Wilson et al explores the potential uses of pressure inputs of one hand squeezing a mobile device to provide multiple potential inputs by embedding multiple FSRs at the back of the device [23]. Kimura et al introduced a method that produces pseudo-haptic feedback from the hand by using device equipped with pressure sensors [8].…”

Section: Related Work 21 Pressure Sensing With External Sensorsmentioning

confidence: 99%

“…Among these methods, the addition of a pressure sensing mechanism is especially important as it has potential to greatly increase interaction vocabulary. There have been many previous proposals to add pressure sensors to the bottom or back of the mobile devices [4] [15] [23]. However while technically feasible, these proposals require a significant amount of capital investment and risk on the part of the mobile device manufacturers.…”

Section: Introductionmentioning

confidence: 99%

Pressure detection on mobile phone by camera and flash

Low

Sugiura

et al. 2014

Proceedings of the 5th Augmented Human International Conference

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This paper proposes a method to detect pressure asserted on a mobile phone by utilizing the back camera and flash on the phone. There is a gap between the palm and camera when the phone is placed on the palm. This allows the light from the flashlight to be reflected to the camera. However, when pressure is applied on the phone, the gap will reduce, reducing the brightness captured by the camera. This phenomenon is applied to detect two gestures: pressure applied on the screen and pressure applied when user squeezes the phone. We also conducted an experiment to detect the change in brightness level depending on the amount of force asserted on the phone when it is placed in two positions: parallel to the palm and perpendicular to the palm. The results show that when the force increases, the brightness level decreases. Using the phones ability to detect fluctuations in brightness, various pressure interaction applications such as for gaming purposes may be developed.

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Towards utilising one-handed multi-digit pressure input

Cited by 19 publications

References 13 publications

An Empirical Characterization of Touch-Gesture Input-Force on Mobile Devices

An Empirical Characterization of Touch-Gesture Input-Force on Mobile Devices

The gest-rest

Pressure detection on mobile phone by camera and flash

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