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|Original author(s)||TWAIN Working Group|
|Developer(s)||TWAIN Working Group|
|Initial release||February 1992|
2.3 / 21 November 2013
|Operating system||Linux, OS X, Microsoft Windows|
|Platform||x86, x86-64, PowerPC|
|Type||Application programming interface|
|License||LGPL (Data Source Manager only)|
TWAIN is not a hardware-level protocol; it requires a driver called Data Source for each device.
The design of TWAIN began in January 1991. The TWAIN group was originally launched in 1992 by several members of the imaging industry, with the intention of standardizing communication between image handling software and hardware. Review of the original TWAIN Developer’s Toolkit occurred from April, 1991 through January, 1992.
The word TWAIN is not officially an acronym, but it is a backronym. The official website notes that "the word TWAIN is from Kipling's The Ballad of East and West — '...and never the twain shall meet...' — reflecting the difficulty, at the time, of connecting scanners and personal computers. It was up-cased to TWAIN to make it more distinctive. This led people to believe it was an acronym, and then to a contest to come up with an expansion. None was selected, but the entry Technology Without an Interesting Name continues to haunt the standard." For example, the Encyclopedia of Information Technology lists "Technology Without an Interesting Name" as the official meaning of TWAIN.
|1.6||5 February 1996||
|1.7||19 August 1997||
|1.8||22 October 1998||
|1.9||20 January 2000|
|2.0||22 February 2008|
|2.1||8 July 2009||
|2.2||16 February 2012||
|2.3||21 November 2013||
Objectives of the TWAIN Working Group and standard include:
- Ensure image-handling software and hardware compatibility
- Keep the specification current with the state of current software and hardware while maintaining backward compatibility
- Provide multiple-platform support
- Maintain and distribute a no-charge developer's toolkit
- Ensure ease of implementation
- Encourage widespread adoption
- Open Source Data Source Manager
- LGPL Open Source License
- BSD Open Source Sample Application and Sample Data Source Application
TWAIN provides support for:
- Production, high-speed scanning
- ICC Color profiles
- Digital cameras
- Multiple operating system platforms including Windows, classic Mac OS, macOS, and Linux
TWAIN Working Group membership
Today the TWAIN standard, including the specification, data source manager and sample code, are maintained by the not-for-profit organization TWAIN Working Group.
Board and associate members of the TWAIN Working Group include:
- Atalasoft, a Lexmark company
- Kodak Alaris
- Fujitsu Computer Products of America
- InoTec GmbH
- Picture Elements
- Drummond Group
- ExactCODE GmbH
- Panasonic System Communications Company North America
- Microtek International, Inc.
- Windows Image Acquisition (WIA)
- Scanner Access Now Easy (SANE)
- Image and Scanner Interface Specification (ISIS)
- "TWAIN". Eztwain.com. Retrieved 2013-06-14.
- What is the TWAIN Initiative? Archived March 8, 2012, at the Wayback Machine.
- TWAIN docs index Archived September 27, 2011, at the Wayback Machine.
- Chambers, Mark L. (2010). PCs All-in-One For Dummies (5th ed.). John Wiley & Sons. p. 458. ISBN 9780470908006.
- Pete Walsh; Francine Spiegel; Janee Aronoff (2013). Photoshop Elements 2 Most Wanted. Apress. p. 8. ISBN 9781430251194.
- "The TWAIN Forum • View topic - What is TWAIN an acronym for?". Twainforum.org. Retrieved 2013-06-14.
- Encyclopedia of Information Technology. Atlantic Publishers & Dist. 2007. p. 501. ISBN 8126907525.
- TWAIN Working Group
- Overview of TWAIN and TWAIN Data Sources
- TWAIN: Linking Applications and Images - A White Paper by Hewlett Packard
- 9 Rules for Evaluating Web TWAIN Components - A White Paper by Dynamsoft
- ScanTWAIN Open Source Example of using TWAIN 2.0 from Linux
- TWAIN 2.3 specification