A 3-letter word CAPTCHA is a simple and effective way to protect websites from bots and automated scripts while ensuring a user-friendly experience. Here are some possible 3-letter word CAPTCHA examples:
1. CAPTCHA: CAT
User Prompt: Please type the three letters you see in the box below.
Image: [C][A][T]
2. CAPTCHA: SUN
User Prompt: Help us prevent spam. Enter the three letters you see in the image.
Image: [S][U][N]
3. CAPTCHA: DOG
User Prompt: To continue, enter the 3 letters shown in the picture.
Image: [D][O][G]
4. CAPTCHA: FUN
User Prompt: Prove you're human by entering the 3 letters you see below.
Image: [F][U][N]
5. CAPTCHA: HAT
User Prompt: Type the 3 letters you see in the image to access the website.
Image: [H][A][T]
6. CAPTCHA: RED
User Prompt: Enter the three letters you see to pass the security check.
Image: [R][E][D]
7. CAPTCHA: FOX
User Prompt: Please verify your humanity by typing the 3 letters shown below.
Image: [F][O][X]
8. CAPTCHA: BIN
User Prompt: To proceed, enter the 3 letters displayed in the image.
Image: [B][I][N]
9. CAPTCHA: TOP
User Prompt: Prevent bots by typing the 3 letters you see in the box.
Image: [T][O][P]
10. CAPTCHA: WOW
User Prompt: Help us keep our site secure. Enter the 3 letters from the image.
Image: [W][O][W]
Remember that CAPTCHAs should be designed with good contrast and readability to ensure that humans can easily pass the test, while still being challenging for automated systems to decipher. Additionally, it's always a good idea to provide an alternative for users with disabilities, such as an audio-based CAPTCHA for visually impaired users.