Aaj ke samay main koi bhi website open karlo ek chiz aapko jarur dekhne ko milegi jaisa ki aap niche dekh sakte ho

 lekin iska kya kaam hai aur ye aapka 1,2 minute kyo waste karta hai aur ye direct open kyo nhi ho jata aaj isi ke bare main baat karenge !

Iska upyog privacy ke liye kiya jata hai privacy kaise jaise aap koi train, cinema ya jo bhi laga lo to aap kisi ki ticket book karte ho to aapko minimum 1 ya 2 Minute to lag hi jata hai aur bhot baar kya hota hai ki aapse pahale hi log ticket book kar lete hai aur aap rah jate hai to aise main logo ne kya kiya ki khud ki script banani shuru kar di jisse vo automatic ticket book kara sake aur jaha par unhe ticket book karane main 2 minute lagta tha uski jagah script ka use karke vo second main ticket book kara lete the iske samadhan ke liye company ne captcha ka istemal kiya jiska poora matlab hai !
C= COMPLETELY
A= AUTOMATED
P= PUBLIC
T= TURNING TEST TO TELL
C= COMPUTER AND
H= HUMANS
A= APART

Iske alawa aapko ek aur chiz dekhne ko mil jati hai jaisa ki aap niche dekh sakte ho

Iska use insaan hi kar sakta hai kyoki aise taidhe maidhe words ko computer nhi samajh sakta isliye company ne scripts aur coding ko rokne ke liye iska istemal kiya jise kahate hai OCA !

Phir aaya 2009 main google jisne captcha wali company ko hi kharid liye lekin ab tak market main bhot sari company aa gyi thi jo user se paid le leti thi aur jo captcha hota tha use khud hi bharke user ko de deti thi yani ek tarah se captcha se paise kamane lag gyi thi !

Lekin Google isko thoda advance karte hua kyoki captcha bharne main bhot sara time waste hota tha isliye Google ne ek captcha launch kiya jispar ek click karte hi user use bypass karte hua aage ja sakta tha lekin isi ke sath sath aapki location page history ye sari chize bhi Google ko mil jati hai jisse wo samajh jata hai aap human ho ya robot yani computer !

Captcha se bhot se fhayde hai jo fraud websites ko rokne main madad karta hai ummeed hai aapko aaj ka article pasand aaya hoga !