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Image-based CAPTCHA for touch screen devices

Country of Origin: Spain
Reference Number: TOES20160205001
Publication Date: 9 March 2017

Summary

Researchers from a Spanish university have developed a new image-based CAPTCHA technology for touch screen devices such as mobile phones or tablets. This invention allows controlling web access, in addition to selecting and counting image elements. Also it allows for analysing and segmenting images.
ICT companies engaged in the implementation and development of CAPTCHA related technologies are sought for licensing and research cooperation agreements.

Description

A Spanish research group specialized in image processing, analysis and computer vision has developed an innovative image-based CAPTCHA technology for touch screen device. A CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) is a widespread security measure that prevents automated abuse of networked resources such as free-e-mail, providers, social networks, wikis and blogs. 

One of the advantages humans possess over computers is the capacity to recognize similar objects within images, in spite of various types of distortion. The invention proposes a new form of image-based CAPTCHA interface design well suited for touch screen devices. In addition, it allows identifying and counting image elements to provide solutions to certain tasks that computers cannot perform without human intervention (Human-Based Computation).

For example, the prototype developed permits users employ their fingers directly on the screen surface to select and count human erythrocytes in an image. Furthermore, they can select different deformed red blood cells causing certain types of anaemia such as siklemia.

ICT companies engaged in the implementation and development of CAPTCHA related technologies are sought.
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Advantages and Innovations

The developed technology in comparison with similar products permits the direct use of one’s fingers on the screen surface to recognize similar objects within given images. Furthermore, this invention is particularly accessible for younger or non-expert smart device users.

Stage Of Development

Prototype available for demonstration

Stage Of Development Comment

Prototype available for demonstration. The interface allows distinguishing human users from computer bots. The usability testing shows that it is well-suited for mobile devices.

Requested partner

ICT companies engaged in the implementation and development of CAPTCHA related technologies are sought.

Cooperation offer is closed for requests