CAPTCHA Tweet* is an application which users can post tweets in a CAPTCHA form with. Since computers can hardly read it, humans can communicate behind their sight.
CAPTCHA has originally been developed to distinguish computers from humans. It asks the user to type text from a distorted image. This is easy for a human but difficult for a computer. It sorts out computers by requiring them to complete a task which only humans can. CAPTCHA Tweet uses it as cryptography for secret communication between humans based on the fact that it is not legible to computers’ eyes.
This work is an extension of our exploration of computer vision. We see CAPTCHA as a symbol of the relationship between human vision and computer vision and the intervention of computers in human life. CAPTCHA Tweet attempts to re-present this implication of CAPTCHA to the public sphere by applying it to the social network communication.
*Tested with OCR: Tesseract-ocr, GOCR, GNU Ocrad and ABBYY FineReader.