{{short description|Type of keyboard on mobile devices}}
300px|thumb|Slider mobile phone
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.<ref>{{cite book | date = 2022-06-01 | first1 = Dan | first2 = Asim | first3 = Thad | isbn = 978-3-031-02476-4 | language = en | last1 = Siewiorek | last2 = Smailagic | last3 = Starner | publisher = Springer Nature | title = Application Design for Wearable Computing | url = https://books.google.com/books?id=N4ByEAAAQBAJ&dq=Thumb+keyboard+QWERTY&pg=PA28 }}</ref> The inputting surface is usually relatively small and is intended for typing using thumbs, with the other fingers employed to hold the device.<ref>{{cite book | date = 2009-03-02 | first1 = Andrew | first2 = Julie A. | isbn = 978-1-4200-8882-3 | language = en | last1 = Sears | last2 = Jacko | publisher = CRC Press | title = Human-Computer Interaction Fundamentals | url = https://books.google.com/books?id=npLEMUzgQ_0C&dq=Thumb+keyboard+QWERTY&pg=PA144 }}</ref>
== Devices with thumb keyboards ==
* BlackBerry *Clicks Technology **Clicks Communicator * Some Hewlett Packard (HP) PDAs ** IPAQ 4350/4355/63XX series * HTC ** HTC Apache ** HTC Touch Pro ** HTC Touch Pro2 ** HTC TyTN ** HTC TyTN II *Minimal Company ** Minimal Phone * Motorola ** Motorola MPx220 ** Motorola Q * Nokia ** Nokia Communicator ** Nokia Eseries ** Nokia N97 * Palm ** Palm Treo smartphones, with the exception of the Treo 180g ** Palm Tungsten C * Samsung ** Samsung Blackjack (SGH-i607) ** Samsung Galaxy Chat (GT-B5330) * Sony ** Some Sony CLIE PDAs ** Sony Ericsson Xperia X1 *Unihertz **Unihertz Titan * Wibrain: B1, B1L, B1H, I1 * Xbox 360 Chatpad
== References ==
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category:computer keyboard types