# NIZU recaptcha: Will visitors notice anything?

> No. The proof-of-work solves in about one second in the background while the visitor fills in the form. There is no checkbox, puzzle, badge, or visible delay. (FAQ)

- Page: https://dashboard.nizu.io/knowledge_base/view/135-nizu-recaptcha-will-visitors-notice-anything
- Part of: [Knowledge base](https://dashboard.nizu.io/knowledge_base/llms.txt) on NIZU — https://dashboard.nizu.io/llms.txt
- Updated: 2026-10-25T11:50:03Z

No. The proof-of-work solves in about one second in the background while the visitor fills in the form. There is no checkbox, puzzle, badge, or visible delay.