Thumb keyboard

A thumb keyboard, or a thumb board, is a type of keyboard commonly found on PDAs, mobile phones, and PDA phones which has a familiar layout to an ordinary keyboard, such as QWERTY.^[1] The inputting surface is usually relatively small and is intended for typing using the available thumbs, while holding the device.^[2]

^ Siewiorek, Dan; Smailagic, Asim; Starner, Thad (2022-06-01). Application Design for Wearable Computing. Springer Nature. ISBN 978-3-031-02476-4.
^ Sears, Andrew; Jacko, Julie A. (2009-03-02). Human-Computer Interaction Fundamentals. CRC Press. ISBN 978-1-4200-8882-3.

[1] Siewiorek, Dan; Smailagic, Asim; Starner, Thad (2022-06-01). Application Design for Wearable Computing. Springer Nature. ISBN 978-3-031-02476-4.

[2] Sears, Andrew; Jacko, Julie A. (2009-03-02). Human-Computer Interaction Fundamentals. CRC Press. ISBN 978-1-4200-8882-3.

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