00653 a2200181 4500 Nust 20170207153157.0 Nust 005.8 Khan, Samin Jan (MSIS-5) A technique to discourage the relay attack on captcha Samin Jan Khan MCS(NUST) February, 2010 Rawalpindi x, 71, p. Introduction (page-1) Background/Literature survey (page-14) The proposed 3-Captcha machanism and its benefits (page-34) Implementation of proposed Captcha mechanism (page-40) Conclusion (page-52) Almirah No.70 Shelf No.4 PG Thesis MSIS-5 THS 180814 180814 0 0 ddc 0 0 NFIC MCS MCS 2016-12-12 0 005.8 KHA MCSTIS-105 2016-12-08 2016-12-12 BK 0 0 ddc 0 0 NFIC MCS MCS 2016-12-12 0 005.8 KHA MCSTIS-106 2016-12-08 2016-12-12 BK 0 0 ddc 0 0 NFIC MCS MCS 2016-12-12 0 005.8 KHA MCSTIS-55 2016-12-08 2016-12-12 BK