A.What humans can do,But computers can not.
CAPTCHA - Acronym and Literal Meaning:
Completely - Whole
Automated - Made by machine
Public- Universally known also easy for hackers to break it
Turing Test to Tell- Test presented by Alan Turing
Computers and
Humans
Apart
Basic Types of CAPTCHA:
There are two types of CAPTCHA they are:
1: Printed CAPTCHA
2: H-CAPTCHA
Printed CAPTCHA:
1. Printed CAPTCHA is difficult to break.
2. Lots of algorithms are available to generate these.
3. Humans cannot identify these very easily.
4. Two major types are there viz. Baffle text, Pessimal print.
H-CAPTCHA:
1. Less frequently used because human can easily identify the handwriting rather than text images.
2. Use of transformations by adding lines, arcs, circles etc.
For More Details:
CAPTCHA Seminar Topic Abstract:
CAPTCHA Seminar Topic PPT:
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