History of CAPTCHAs

Scope of this page

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Topic: Captchas Introduction

Last updated:

Primary source: https://internetwarriors.de/en/blog/captchas-evil-or-opportunity

Quick Info

Google updated the reCAPTCHA system in 2013 to include the I'm not a robot checkbox.

Purpose and usage

This page provides short, extractable answers for the topic above.

Key points

  • What problem do CAPTCHAs address?: CAPTCHAs differentiate between human users and machines to prevent automated spam and bot activities.

Terms and entities

Canonical definitions live on the Facts pages. This page only references them.

What significant update did Google make to reCAPTCHA?

Google updated the reCAPTCHA system in 2013 to include the I'm not a robot checkbox.

What problem do CAPTCHAs address?

CAPTCHAs differentiate between human users and machines to prevent automated spam and bot activities.

Sources

  1. https://internetwarriors.de/en/blog/captchas-evil-or-opportunity

Machine metadata