Tactile Presentation to the Back of a Smartphone with Simultaneous Screen Operation

Khurelbaatar, Sugarragchaa; Nakai, Yudai; Okazaki, Ryuta; Yem, Vibol; Kajimoto, Hiroyuki

doi:10.1145/2858036.2858099

Cited by 14 publications

(7 citation statements)

References 12 publications

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“…These provide tactile sensations comparable to me chanical vibrations by directly stimulating nerve stems in the skin using controlled electric current impulses (50 − 200µs pulses of 1 − 10mA) [19,60]. While limited in the dynamic range of intensities, they can be used to generate tactile feed back on objects independent of whether the finger is moving or stationary [18,23]. Furthermore, recent research shows that electro-tactile interfaces can be easily fabricated using print ing [21] and can be realized as thin and flexible interfaces [56].…”

Section: Dynamic Tactile Feedback On Interactive Objectsmentioning

confidence: 99%

Tactlets

Groeger

Feick

Withana

et al. 2019

Proceedings of the 32nd Annual ACM Symposium on User Interface Software and Technology

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edge slider buttons Tactlet library real-time control a b c d Figure 1. Tactlets is a novel approach enabling digital design and rapid printing of custom, high-resolution controls for tactile output with integrated touch sensing on interactive objects. (a) A design tool allows a designer to add Tactlet controls from a library and customize them for 3D object geometries. The designer can then fabricate a functional prototype using conductive inkjet printing (b) or 3D printing (c), and explore the interactive behavior of the Tactlet control. (d) This approach allows for rapid design iterations to prototype tactile input and output on a variety of objects. ABSTRACTRapid prototyping of haptic output on 3D objects promises to enable a more widespread use of the tactile channel for ubiqui tous, tangible, and wearable computing. Existing prototyping approaches, however, have limited tactile output capabilities, require advanced skills for design and fabrication, or are in compatible with curved object geometries. In this paper, we present a novel digital fabrication approach for printing cus tom, high-resolution controls for electro-tactile output with integrated touch sensing on interactive objects. It supports curved geometries of everyday objects. We contribute a de sign tool for modeling, testing, and refining tactile input and output at a high level of abstraction, based on parameterized electro-tactile controls. We further contribute an inventory of 10 parametric Tactlet controls that integrate sensing of user input with real-time electro-tactile feedback. We present two approaches for printing Tactlets on 3D objects, using conduc tive inkjet printing or FDM 3D printing. Empirical results from a psychophysical study and findings from two practi cal application cases confirm the functionality and practical feasibility of the Tactlets approach.•Human-centered computing → Human computer inter action (HCI); Haptic devices; Interactive systems and tools; Interface design prototyping;Digital fabrication has been proposed as a new method for rapid prototyping of interactive devices [10,25,34,32,44]. By printing the custom device, rather than manually assembling it from conventional electronic components, the fabrication process can be considerably simplified and sped up. At the same time, as printable electronics commonly are very thin and deformable, more demanding geometries and advanced I/O capabilities can be realized. Prior work has demonstrated ap proaches based on printed electronics to equip custom-shaped 3D objects with various types of printed sensors for capturing user input [11,34,44,45,54] and printable output compo nents, including light-emitting displays [35,54] and actuators for shape-change [7,57].However, tactile output was so far left unaddressed. Fab ricating custom interactive objects that include computercontrolled tactile output still relies on manually assembling conventional components [15,36]. Moreover, the rather large

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Section: Dynamic Tactile Feedback On Interactive Objectsmentioning

confidence: 99%

Tactlets

Groeger

Feick

Withana

et al. 2019

Proceedings of the 32nd Annual ACM Symposium on User Interface Software and Technology

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“…The electrovibration and electrocutaneous techniques mentioned above can be implemented at the periphery of a handheld device and it would not require a transparent surface on touchscreen based devices. Khurelbaatar et al used the electrocutaneous tactile stimulation at the back of the device, for instance, to avoid giving tactile feedback to the entire palm [14]. The finger at the back of device receives the feedback instead of the finger touching the screen.…”

Section: Peripheral Haptic Devicesmentioning

confidence: 99%

Pulp Friction

Goguey

Sahoo

Robinson

et al. 2019

Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems

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Current haptic feedback techniques on handheld devices are applied to the finger pad or the palm of the user. These state-of-the-art approaches are coarse-grained and tend to be intrusive, rather than subtle. In contrast, we present a new feedback technique that applies stimuli around the periphery of the finger pulp, demonstrating how this can provide rich, nuanced haptic information. We use a reconfigurable haptic device employing a ferromagnetic marble for back-of-the device handheld use, which, for the first time, probes, without instrumenting the user, the periphery of the distal phalanx with localised stimulation. We present the design-space afforded by this new technique and evaluate the human-factors of finger-peripheral touch interaction in a controlled userstudy. We report results with marbles of different diameters, speeds and a combination of poking, lateral vibration and patterns; present the resulting design guidelines for fingerperiphery haptic feedback; and, illustrate its potential with use case scenarios. CCS CONCEPTS • Human-centered computing → Human computer interaction (HCI).

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“…Tactile or cutaneous sensations are perceived through mechanoreceptors in the skin [42,25] and can be an effective medium to communicate information to humans [7,26]. Wearable tactile displays allow for always-available, subtle and private output [6,63,49,62,58,26,39]. The most commonly used technology for wearable tactile interfaces, including commercial products, is vibro-tactile output.…”

Section: Related Workmentioning

confidence: 99%

“…This provides a significant advantage for wearable applications where small, lightweight and flexible interfaces are desirable. Electro-tactile interfaces use two or more electrodes in contact with the skin and a controlled electric current pulse to directly stimulate nerve stems of mechanoreceptors, which the brain interprets as mechanical vibrations [60,32,70,4,39]. They can deliver versatile tactile properties such as a wide band of frequencies at a high tactile acuity [54,4].…”

Section: Related Workmentioning

confidence: 99%