Requirements
- OpenCart 1.5.1.x and later
- VQMod 2.1.7 or later (http://vqmod.com)
- Google ReCAPTCHA public and private key set (http://google.com/recaptcha/whyrecaptcha)
- ReCAPTCHA PHP Library 1.11 (included with download)


GET IT HERE
Those looking for more features including adding ReCAPTCHA across the storefront, optionally adding it to account and affiliate registration, multiple themes, and support for auto-loading ReCAPTCHA's eight languages should check out ReCAPTCHA Advanced.