| Presentation | 2013-07-18 Study of CAPTCHA Suitable for Smartphones Mayumi TAKAYA, Yusuke Tsuruta, Hikari KATO, Takeshi KOMATSUBARA, Yusuke WATANABE, Akihiro YAMAMURA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Smartphones are different from the existing computer systems in the sense that touchscreens can be equipped as input devices and have no keyboards and displays are relatively small. When using CAPTCHA, which is a technique preventing evil network accesses, it is necessary to use the standard console interfaces. Therefore it is not necessarily adequate to accesses from smartphones. We propose a CAPTCHA that tells data made by a computer program from one-stroke sketch data given by a human being using embodied knowledge. Utilizing touchscreens of smartphones, we realize this approach and resolve a conceivable inconvenience caused by the existing CAPTCHAs when using smartphones due to the limited display size of smartphones. We implement the proposed technique and analyze its validity, usefulness and security. We also analyze plausible attacks using line trace programs. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | CAPTCHA / Smartphones / Touchscreens / Line trace Programs |
| Paper # | ISEC2013-11,SITE2013-6,ICSS2013-16,EMM2013-13 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2013/7/11(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Information Security (ISEC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study of CAPTCHA Suitable for Smartphones |
| Sub Title (in English) | |
| Keyword(1) | CAPTCHA |
| Keyword(2) | Smartphones |
| Keyword(3) | Touchscreens |
| Keyword(4) | Line trace Programs |
| 1st Author's Name | Mayumi TAKAYA |
| 1st Author's Affiliation | Faculty of Engineering and Resource Science, Akita University() |
| 2nd Author's Name | Yusuke Tsuruta |
| 2nd Author's Affiliation | System Research CO. |
| 3rd Author's Name | Hikari KATO |
| 3rd Author's Affiliation | Faculty of Engineering and Resource Science, Akita University |
| 4th Author's Name | Takeshi KOMATSUBARA |
| 4th Author's Affiliation | Faculty of Engineering and Resource Science, Akita University |
| 5th Author's Name | Yusuke WATANABE |
| 5th Author's Affiliation | Faculty of Engineering and Resource Science, Akita University |
| 6th Author's Name | Akihiro YAMAMURA |
| 6th Author's Affiliation | Faculty of Engineering and Resource Science, Akita University |
| Date | 2013-07-18 |
| Paper # | ISEC2013-11,SITE2013-6,ICSS2013-16,EMM2013-13 |
| Volume (vol) | vol.113 |
| Number (no) | 135 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |