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| audio_captcha [2010/01/28 11:45] – nishimotz | audio_captcha [2010/01/28 11:59] – nishimotz | ||
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| Viewied from another side, mental workload for human in listening audio CAPTCHA tasks has not been investigated very much. | Viewied from another side, mental workload for human in listening audio CAPTCHA tasks has not been investigated very much. | ||
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| + | Design method of CAPTCHA task in consideration of safety and ease-of-use is described in this paper. | ||
