18-04-2011, 12:43 PM
SUBMITTED BY:-
ABHAY NAGAR
[attachment=12295]
CAPTCHA
A PROGRAM THAT CAN TELL WHETHER ITS USER IS A HUMAN OR A COMPUTER
A PROGRAM THAT CAN GENERATE AND GRADE TESTS THAT:
A. MOST HUMANS CAN PASS
B. CURRENT COMPUTER PROGRAMS CANNOT PASS
APPLICATIONS
FREE E-MAIL SERVICES
DATA COLLECTION
WORMS AND SPAM
CAPTCHA SWEAT SHOPS
SPAM COMPANIES HIRE HUMANS TO SOLVE CAPTCHAS ALL DAY LONG