Recaptcha not validating

Broder; and (2) Eran Reshef, Gili Raanan and Eilon Solan.This form 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.Unlike computers, humans excel at this type of task.

recaptcha not validating-21

CAPTCHAs are, by definition, fully automated, requiring little human maintenance or intervention to administer, producing benefits in cost and reliability.

By definition, the algorithm used to create the CAPTCHA must be made public, though it may be covered by a patent.

Since sites may use CAPTCHAs as part of the initial registration process, or even every login, this challenge can completely block access.

In certain jurisdictions, site owners could become targets of litigation if they are using CAPTCHAs that discriminate against certain people with disabilities.

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 user identification procedure has received many criticisms, especially from disabled people, but also from other people who feel that their everyday work is slowed down by distorted words that are difficult to read.

The first such people could be hackers, posting about sensitive topics to Internet forums they thought were being automatically monitored for keywords.

To circumvent such filters, they would replace a word with look-alike characters.

While used mostly for security reasons, CAPTCHAs also serve as a benchmark task for artificial intelligence technologies.

Tags: , ,