The term was developed in 2003 by louis von ahn, manuel blum, nicholas j. Hopper, and john langford. The most popular type of captcha (displayed as version 1.0) was first invented in 1997 by two groups working in parallel. This form of captcha requires you to enter a sequence of letters or numbers...
Hoevestraat 18
1745 Opwijk
0644.678.331