Are there more elegant options to CAPTCHA? [duplicate]

1. What is the difference between CAPTCHA and reCAPTCHA?
2. Should I use reCAPTCHA v2 or v3?
3. What is the main difficulty with using CAPTCHA?

What is the difference between CAPTCHA and reCAPTCHA?

CAPTCHA—The Bottom Line. A CAPTCHA is a test designed to differentiate between real human users and malicious bots. ReCAPTCHA is a CAPTCHA system developed by Google. Advanced bots threaten all websites that rely on traditional CAPTCHAs alone to keep cybercriminals at bay.

Should I use reCAPTCHA v2 or v3?

Is reCAPTCHA v3 better than v2? Neither of them is good at blocking bots. While reCAPTCHA v3 is less intrusive than v2 for a user, it places a significant burden on the webmaster to determine when to let users through and when to block or challenge them. There's no right answer to this.

What is the main difficulty with using CAPTCHA?

CAPTCHA aren't accessible

Even users without impairments can have difficulty trying to decipher the cryptic text. Google acknowledge their reCaptcha text is so complicated that even humans only solve it 87% of the time. There are alternatives to inaccessible and difficult CAPTCHA.