ReCAPTCHA
A ReCAPTCHA is a type of CAPTCHA. It was first made in 2007.[1] It asks the user questions, mainly an image that shows something it says.
ReCAPTCHA Media
An example of how a reCAPTCHA challenge looked in 2007, containing the words "following" and "finding". The waviness and horizontal stroke were added to increase the difficulty of breaking the CAPTCHA with a computer program.
An example of how reCAPTCHA challenges were presented in 2010, containing the words "and chisels"
