Audio Captcha

Definition updated on November 2023

What is an Audio Captcha?

In order to provide accessibility to users who are blind or visually challenged, audio CAPTCHAs were developed. These CAPTCHAs are frequently combined with those that use text or images. Audio CAPTCHAs play a recording of a string of letters or numbers that must be entered by the user. These CAPTCHAs rely on bots' inability to differentiate between important characters and background noise. These techniques, like text-based CAPTCHAs, can be challenging for both humans and computers to understand.

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