Take the 2-minute tour ×
Webmasters Stack Exchange is a question and answer site for pro webmasters. It's 100% free, no registration required.

I need to implement a CAPTCHA for a Chinese (Simplified) website. Does anyone know how CAPTCHAs are normally presented on Chinese sites? I have seen some which just display standard decimal numbers but since there's less variation these are not as secure as I'd like. Is it acceptable to use a CAPTCHA containing letters from the standard English alphabet?

share|improve this question
add comment

1 Answer

Use numbers only. I've seen Russian, Chinese, and other non-Roman language sites take this approach. Presenting Roman captures is unwise, as it's not safe to assume that mangled alien characters will be legible to non-native speakers. (I find them hard to decipher at the best of times.)

You might also consider omitting CAPTCHAs altogether by using a service such as Defensio, Mollom, or Akismet, which attempt to score submitted form data to determine if it's automated.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.