{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,19]],"date-time":"2025-09-19T08:40:47Z","timestamp":1758271247424,"version":"3.28.0"},"reference-count":24,"publisher":"IEEE","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2010,10]]},"DOI":"10.1109\/cw.2010.48","type":"proceedings-article","created":{"date-parts":[[2010,12,11]],"date-time":"2010-12-11T04:14:19Z","timestamp":1292040859000},"page":"254-261","source":"Crossref","is-referenced-by-count":7,"title":["CAPTCHA Challenges for Massively Multiplayer Online Games: Mini-game CAPTCHAs"],"prefix":"10.1109","author":[{"given":"Yang-Wai","family":"Chow","sequence":"first","affiliation":[]},{"given":"Willy","family":"Susilo","sequence":"additional","affiliation":[]},{"given":"Hua-Yu","family":"Zhou","sequence":"additional","affiliation":[]}],"member":"263","reference":[{"key":"ref10","doi-asserted-by":"crossref","first-page":"294","DOI":"10.1007\/3-540-39200-9_18","article-title":"CAPTCHA: Using Hard AI Problems for Security","volume":"2656","author":"von ahn","year":"2003","journal-title":"Advances in Cryptology - EUROCRYPT 2003"},{"key":"ref11","doi-asserted-by":"crossref","first-page":"711","DOI":"10.1145\/1054972.1055070","article-title":"Designing Human Friendly Human Interaction Proofs (HIPs)","author":"chellapilla","year":"2005","journal-title":"Proc of the SIGCHI Conference on Human Factors in Computing Systesm"},{"year":"0","key":"ref12"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.1145\/1077246.1077255"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-04904-0_26"},{"journal-title":"Exploiting Online Games Cheating Massively Distributed Systems","year":"2007","author":"hoglund","key":"ref15"},{"key":"ref16","article-title":"A Step in the Right Direction: Botdetection in MMORPGs using Movement Analysis","author":"van kesteren","year":"2009","journal-title":"Proc of the 21st Belgian-Dutch Conference on Artificial Intelligence (BNAIC 2009)"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1145\/1326257.1326258"},{"key":"ref18","doi-asserted-by":"publisher","DOI":"10.1145\/1408664.1408671"},{"key":"ref19","doi-asserted-by":"publisher","DOI":"10.1145\/1618452.1618505"},{"year":"0","key":"ref4"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1109\/MSP.2009.78"},{"key":"ref6","article-title":"Understanding “Gold Farming” and Real-Money Trading as the Intersection of Real and Virtual Economies","volume":"2","author":"heeks","year":"2010","journal-title":"Journal of Virtual World Research Virtual Economies Virtual Goods and Services Delivery in Virtual Worlds"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1145\/1653662.1653694"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.1145\/1178823.1178829"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1145\/1324198.1324205"},{"journal-title":"World of WarCraft","year":"0","key":"ref2"},{"key":"ref1","article-title":"An Analysis of MMOG Subscription Growth","author":"woodcock","year":"2008","journal-title":"ION Game Conference"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.1145\/1501750.1501770"},{"key":"ref20","doi-asserted-by":"publisher","DOI":"10.1145\/1517494.1517518"},{"year":"0","key":"ref22"},{"year":"0","key":"ref21"},{"journal-title":"Game Design and Development Fundamentals of Game Design","year":"2007","author":"adams","key":"ref24"},{"year":"0","key":"ref23"}],"event":{"name":"2010 International Conference on Cyberworlds (CW)","start":{"date-parts":[[2010,10,20]]},"location":"Singapore, Singapore","end":{"date-parts":[[2010,10,22]]}},"container-title":["2010 International Conference on Cyberworlds"],"original-title":[],"link":[{"URL":"http:\/\/xplorestaging.ieee.org\/ielx5\/5654666\/5654996\/05656343.pdf?arnumber=5656343","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,11,15]],"date-time":"2021-11-15T07:49:44Z","timestamp":1636962584000},"score":1,"resource":{"primary":{"URL":"http:\/\/ieeexplore.ieee.org\/document\/5656343\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2010,10]]},"references-count":24,"URL":"https:\/\/doi.org\/10.1109\/cw.2010.48","relation":{},"subject":[],"published":{"date-parts":[[2010,10]]}}}