query: Is there any alternative to captcha?
positive_passages.docid: 144976
positive_passages.text: Blocking comment spam without using captcha
negative_passages.docid: 39551
negative_passages.text: Allow to submit an answer with ctrl+enter
negative_passages.docid: 95021
negative_passages.text: Why am I being redirected to a captcha when I am just searching?
negative_passages.docid: 157645
negative_passages.text: Is it possible to automate testing involving Two-factor Authentication?
negative_passages.docid: 117105
negative_passages.text: "Images with street signs" CAPTCHA impossible to solve
negative_passages.docid: 115853
negative_passages.text: Best way to handle security and avoid XSS with user entered URLs
negative_passages.docid: 75379
negative_passages.text: What simpler mail server can I use instead of postfix?
negative_passages.docid: 98743
negative_passages.text: localStorage a replacement for cookies?
negative_passages.docid: 151394
negative_passages.text: How to reverse geocode without Google?
negative_passages.docid: 48588
negative_passages.text: Web Safe Alternative to Myriad Pro Font?
negative_passages.docid: 13232
negative_passages.text: Protection against XSS exploits?
negative_passages.docid: 24029
negative_passages.text: Ways to circumvent the same-origin policy
negative_passages.docid: 93083
negative_passages.text: Automatic post-registration user authentication
negative_passages.docid: 39538
negative_passages.text: Is there a W3C valid way to disable autocomplete in a HTML form?
negative_passages.docid: 14865
negative_passages.text: How often do CAPTCHAs appear?
negative_passages.docid: 158403
negative_passages.text: How to avoid getting spam through a website?
negative_passages.docid: 140528
negative_passages.text: How to Prevent SPAM without CAPTCHAs or a Centrally managed system (e.g. akismet)