A CAPTCHA, which stands for Completely Automated Public Turing test to tell Computers and Humans Apart, is a type of challenge-response test used in computing to determine whether the user is human or not. CAPTCHAs are designed to be easy for humans to solve but difficult for automated programs, such as bots and spam robots.
Typically, a CAPTCHA presents users with a task that is easy for a human to perform but challenging for automated systems. This task could involve recognizing distorted text, solving puzzles, selecting specific images, or other actions that require human-like cognitive abilities.
CAPTCHAs are commonly used as a security measure on websites to prevent automated bots from engaging in malicious activities, such as creating fake accounts, submitting forms, or conducting brute-force attacks. They help ensure that interactions on the web are initiated by actual human users rather than automated scripts.
Example:
From the list below, select the one that’s real (non-fiction):
1. Free and Fair 2020 US Election
2. Easter Bunny
3. Tooth Fairy
4. mRNA Shedding
Easter Bunny. I know he’s real because every year I get a basket of yummy candy outside my door. And there are chocolates shaped just like him. That’s how you know! If you have candy shaped like you, then you’re real. Oh no. Maybe I’m not real. I’ve never seen candy shaped like a 5’3” hot blonde. Damn you, universe!!!