Register Name Email Password Verification step Choose one… 0 — No challenge — just an age question 3 — Arithmetic question 1 — Image captcha (drawn here, no vendor) 6 — Logic question (pick the odd one out) 7 — Invisible: honeypot field and a timing floor 8 — Drag the slider to the target 4 — Emailed one-time code 10 — Sign in with Google 11 — Sign in with Google (separate window) 2 — reCAPTCHA v2 — the checkbox — test key: always passes 9 — reCAPTCHA v2 — invisible — test key: always passes 5 — reCAPTCHA v3 — score, no interaction 10 — hCaptcha 11 — Cloudflare Turnstile The number is stable: a saved test can name 3 and keep meaning the arithmetic question however this list is reordered. Continue
