Publications and the latest revision of this technical report can be found This section describes the status of thisĭocument at the time of its publication. We have grouped these approaches by two category classifications: Stand-Alone Approaches that can be deployed on a web host without engaging the services of unrelated third parties and Multi-Party Approaches that engage the services of an unrelated third party. Non-interactive and tokenized approaches.

This document examines a number of approaches that allow systems to test for human users and the extent to which these approaches adequately accommodate people with disabilities, including recent Research findings also indicate that many popular CAPTCHA techniques are no longer particularly effective or secure, further complicating the challenge of providing services secured from robotic intrusion yet accessible to people with disabilities. Unfortunately the very nature of the interactive task inherently excludes many people with disabilities, resulting in a denial of service to these users.

All interactive approaches require users to perform a task believed to be relatively easy for humans but difficult for robots. The traditional CAPTCHA approach asking users to identify obscured text in an image remains common, but other approaches have emerged. Various approaches have been employed over many years to distinguish human users of web sites from robots. Open with subject line … message topic … ( archives) W3C Group Draft Note 16 December 2021 More details about this document This version: Latest published version: Latest editor's draft: History: Commit history Editors: Scott Hollier Janina Sajka Jason White Michael Cooper ( W3C)įeedback: GitHub w3c/captcha-accessibility Inaccessibility of CAPTCHA Alternatives to Visual Turing Tests on the Web

Google recaptcha bypass 2016