Like when you are filling out something online, it will ask you to type in the security thing. and it is so hard to read! what is this for?
2006-06-23 17:56:43 · 9 answers · asked by Anonymous in Computers & Internet ➔ Internet
It's called 'captcha'. The idea is that a human being can interpret the distorted letters but it's very difficult to write a program which can. That prevents people from writing automatic programs to go create thousands and thousands of accounts.
2006-06-23 18:00:57 · answer #1 · answered by Dave R 6 · 2⤊ 0⤋
This feature is called: CAPTCHA
A CAPTCHA (an acronym for "completely automated public Turing test to tell computers and humans apart", trademarked by Carnegie Mellon University) is a type of challenge-response test used in computing to determine whether or not the user is human. The term was coined in 2000 by Luis von Ahn, Manuel Blum, and Nicholas J. Hopper of Carnegie Mellon University, and John Langford of IBM. A common type of CAPTCHA requires that the user type the letters of a distorted image, sometimes with the addition of an obscured sequence of letters or digits that appears on the screen. Because the test is administered by a computer, in contrast to the standard Turing test that is administered by a human, a CAPTCHA is sometimes described as a reverse Turing test. This term, however, is ambiguous because it could also mean a Turing test in which the participants are both attempting to prove they are the computer. So basically the main purpose is to stop hackers, and spammers OR automated computers (AKA: bots) from easily joining multiple times to a website or entering a website to gain access easier.
2006-06-23 18:01:11 · answer #2 · answered by Anonymous · 0⤊ 0⤋
A CAPTCHA (an acronym for "thoroughly automatic Public Turing attempt to tell computers and people aside", trademarked by potential of Carnegie Mellon college) is a variety of venture-reaction attempt utilized in computing to confirm no remember if or no longer the person is human. The term advance into coined in 2000 by potential of Luis von Ahn, Manuel Blum, Nicholas J. Hopper of Carnegie Mellon college, and John Langford of IBM. a uncomplicated variety of CAPTCHA demands that the person type the letters of a distorted image, each from time to time with the addition of an obscured sequence of letters or digits that looks on the reveal.
2016-10-31 09:38:22 · answer #3 · answered by ? 4 · 0⤊ 0⤋
To make sure that it isn't an automated program filling out the online form, that and to keep hackers out.
2006-06-23 17:59:55 · answer #4 · answered by Kikyo 5 · 0⤊ 0⤋
It keeps ppl from making voluminous amounts of accounts for various reasons. Yea, and I've heard it stops hackers.
2006-06-23 17:59:29 · answer #5 · answered by Most Excellent Mutant 2 · 0⤊ 0⤋
It keeps automatic programs from signing in or up to keep out hackers.
2006-06-23 18:00:09 · answer #6 · answered by xx_muggles_xx 6 · 0⤊ 0⤋
THEY ARE SO THAT A COMPUTER HACKER CANNOT GET INTOP THE SYSTEM AS EASY. COMPUERS CANNOT READ IT!
2006-06-23 17:58:57 · answer #7 · answered by ? 2 · 0⤊ 0⤋
it keeps away hackers apparantly
2006-06-23 17:58:30 · answer #8 · answered by karen 2 · 0⤊ 0⤋
its a tool to eliminate people like you from participating...
2006-06-23 18:00:26 · answer #9 · answered by n9flyboy 4 · 0⤊ 0⤋