Soft Keyboard Evaluations

Merlin, Bruno; Raynal, Mathieu

doi:10.4018/978-1-4666-1628-8.ch002

Cited by 2 publications

(3 citation statements)

References 24 publications

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“…(Castellucci and MacKenzie, 2009) proposed TnToolkit a design and analysis tool for ambiguous, QWERTY, and on-screen keypads. (Merlin et al, 2012) developed E-Assist II: it is a design and evaluation platform to help researchers and clinicians to create new soft keyboards and to evaluate new or existing soft ones. The E-Assist II platform proposes a Software Development Kit and a simple Extensible Markup Language (XML) to develop complex soft keyboards.…”

Section: Related Workmentioning

confidence: 99%

“…Additional functionalities are also possible like dial-up connections, phones calls, etc. The SoKeyTo v2 toolkit (Sauzin et al, 2013) is the result of brainstorming sessions, review of related works (Castelluci and MacKenzie, 2009), (Merlin et al, 2012) and test of Clavicom NG(4) and CiviKey (2) environments. The SoKeyTo v2 is a complete tool: it enables to design, generate and evaluate software keyboards.…”

Section: Related Workmentioning

confidence: 99%

“…A description of the laws implemented is described below in the SoKeyTo section. (Castellucci and MacKenzie, 2009) X X E Assist II (Merlin et al, 2012) X X…”

Section: Interaction Techniquementioning

confidence: 99%

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SoKeyTo: A Tool to Design Universal Accessible Interfaces

Sauzin¹,

Vella²,

Vigouroux³

2022

AHFE International

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Many activities of daily living, such as picking up glasses, controlling the house environment, typing text … can become insurmountable for people who have upper extremity disabilities. The alternative to ask for human help is to use some assistive technologies (AT) to compensate for their motor impairment. There are a lot of available AT responding to these needs. However, there are two limitations. The current devices force the handicapped person to use different ATone for each activity and to acquire another AT if his/her impairment changes. The SoKeyTo platform is an environment which offers functions to design virtual interfaces (robotic arm, home control and virtual keyboard for text input). We analyzed and compared SoKeyTo and other toolkits. The SoKeyTo platform offers configuration options for the interaction techniques, the design of buttons according to the needs and the abilities of the user and the multimodal feedback linked to these buttons. We describe the characteristics of two interactive interfaces designed with SoKeyTo. We report results from a utility and usability questionnaire from trials conducted with two representative end users. The questionnaire also showed a strong interest of the SoKeyTo tool.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

See 1 more Smart Citation

SoKeyTo: A Tool to Design Universal Accessible Interfaces

Sauzin¹,

Vella²,

Vigouroux³

2022

AHFE International

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A Data-Driven Design Evaluation Tool for Handheld Device Soft Keyboards

et al. 2014

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Thumb interaction is a primary technique used to operate small handheld devices such as smartphones. Despite the different techniques involved in operating a handheld device compared to a personal computer, the keyboard layouts for both devices are similar. A handheld device keyboard that considers the physical capabilities of the thumb may improve user experience. We developed and applied a design evaluation tool for different geometries of the QWERTY keyboard using a performance evaluation model. The model utilizes previously collected data on thumb motor performance and posture for different tap locations and thumb movement directions. We calculated a performance index (PITOT, 0 is worst and 2 is best) for 663 designs consisting in different combinations of three variables: the keyboard's radius of curvature (R) (mm), orientation (O) (°), and vertical location on the screen (L). The current standard keyboard performed poorly (PITOT = 0.28) compared to other designs considered. Keyboard location (L) contributed to the greatest variability in performance out of the three design variables, suggesting that designers should modify this variable first. Performance was greatest for designs in the middle keyboard location. In addition, having a slightly upward curve (R = −20 mm) and orientated perpendicular to the thumb's long axis (O = −20°) improved performance to PITOT = 1.97. Poorest performances were associated with placement of the keyboard's spacebar in the bottom right corner of the screen (e.g., the worst was for R = 20 mm, O = 40°, L = Bottom (PITOT = 0.09)). While this evaluation tool can be used in the design process as an ergonomic reference to promote user motor performance, other design variables such as visual access and usability still remain unexplored.

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Soft Keyboard Evaluations

Cited by 2 publications

References 24 publications

SoKeyTo: A Tool to Design Universal Accessible Interfaces

SoKeyTo: A Tool to Design Universal Accessible Interfaces

A Data-Driven Design Evaluation Tool for Handheld Device Soft Keyboards

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