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Anoto AB
Public (Nasdaq StockholmANOT)
Predecessor C Technologies
Headquarters Basingstoke, United Kingdom
Revenue 459 MSEK [1]
8.9 MSEK
Number of employees

Anoto Group AB (former C Technologies) is a Swedish technology company that develops and licenses digital pens. With around 110 employees, the company is headquartered in Basingstoke and has an office in Korea.


The pattern of dots surrounding this letter "a" uniquely identifies its location.

Anoto's main product is the Anoto Digital Pen, a combination of ordinary ink pen and a digital camera (and supporting hardware) that digitally records everything written with the pen. It works by recognizing a special non-repeating dot pattern printed on the paper. The non-repeating nature of the pattern means that the pen is able to determine which page is being written on, and where on the page the pen is.

The dot pattern can be printed on a professional offset printing press or on a laser printer. Dots are printed in black; other colors of ink are invisible to the pen's IR sensor. On a color laser printer, CMY can be mixed to produce a near-black color that is human-readable. For offset printing, Anoto developed an ink color called "Anoto substitute black", a non-carbon-based black ink that is invisible in the IR region, allowing the user to include human-readable black marks with the dot pattern without interference.

While some of Anoto's licensees have targeted the consumer sector, with, for example, learning toys, most licensees sell their products to solution providers who put together customized vertical market systems. Anoto also sells a software development kit (SDK), numerous software applications, the Anoto Forms Solution (AFS). In addition, Anoto sells an ASIC design for the image processing component of the pen; most pen licensees use the same basic design of optical assembly and pen internals. Anoto has approximately 350 partners, primarily in Europe, the United States, and Japan.

Optical scan voting systems are based on Anoto technology.

Models include:

Anoto also has a few other products:

The Anoto Forms Solution includes all components required to set up and use digital pen and paper in order to capture, transfer, and incorporate handwritten information from paper forms into any back-end system. Anoto penDocuments Pro allows users to create electronic copies of handwritten documents. Anoto penPresenter is a personal digital whiteboard. By projecting a blank PowerPoint slide, a digital whiteboard is created.


Anoto also develops and sells the product C-Pen, a one-line text scanner.


Anoto holds more than 300 international patents on their technology and some 300 additional patent applications.

In 2004, Anoto prevailed in a patent infringement lawsuit filed by Oral Sekendur regarding Anoto's dot-pattern technology.[2][3] The Sekendur patent was held invalid.[4]

See also[edit]


  1. ^ "Anoto Group Year End Report 2009" (pdf). Lund, Sweden: Anoto Group. 2010. p. 11. Retrieved 2010-04-05. [permanent dead link]
  2. ^ "Patent containing mere germ of an idea invalid for lack of enablement" (PDF). Colorado Bar Association Intellectual Property Newsletter. 2004-11-19. Archived from the original (PDF) on 2011-07-17. Retrieved 2008-08-23. 
  3. ^ Schmetterer, The Honorable Jack (2005-12-15). "In re Oral F. Sekendur" (PDF). United States Bankruptcy Court, Northern District of Illinois. Archived from the original (PDF) on 16 September 2008. Retrieved 2008-08-23. 
  4. ^ Sekendur, Oral F. (1995-12-19). "Optical position determination". United States Patent 5,477,012. Retrieved 2008-08-23. 

External links[edit]