Google reCAPTCHA: show only digits in recaptcha image? -

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i hoping use google's free recaptcha service on web form.

https://developers.google.com/recaptcha/docs/display

however, don't want distorted letters or words show in recaptcha images. feel these distorted letters give visitors frustration, , did read negative comments using distorted words challenge. hope digits show in recaptcha images.

is developers can configure , control? googled , did not find want.

thanks , regards.

to knowledge, there no way configure this. google decide how wants verify user. sometimes, no input required, user checks box. other times, digits or letter required typed.


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