Do we need it? It's an annoying verification if we must verify us as a human if it's asked more than once.

Please make it only once after the verified process. Further, please delete the weird robotic-human photo on the page.

It's not good for UX (User Experience). Hope this will be changed and fixed.

UPDATE: Solved with some explanation.

  • What process are you attempting that needs multiple verifications? Dec 17, 2010 at 13:40
  • 1
    The verification should only get triggered under some conditions - could you edit your question and tell us in more detail what steps you took? Dec 17, 2010 at 13:41
  • 7
    It's a guard against you using Stack Overflow in the middle of a robotapocalypse. Just because you've proven that you're a human once doesn't mean that a robot hasn't broken into your home, tied you up and has begun editing posts on Stack Overflow from your machine. Stack Overflow must be ever vigilant.
    – Welbog
    Dec 17, 2010 at 16:47
  • Thanks everyone. Only reproduce the normal step to post a question. Okay, I just know it. I'm a new member in here, so I need to ask. @Five So that's what should be happen. Thanks for your explanation. Dec 19, 2010 at 6:48
  • @Closers, see: meta.stackexchange.com/a/218344/282094 meta.stackexchange.com/a/252990/282094 - it's SC and NR only if the issue is removed completely.
    – Rob
    Apr 29, 2021 at 11:11

2 Answers 2


Implemented a while ago:

  • a 5 minute captcha grace period. So if you solve a captcha once, we don't captcha you again for 5 minutes -- unless you trigger the extreme bot thresholds.

  • reduced captcha thresholds for 10k users. Once you get to 10k, you have to go much faster to get the captcha.

  • Thanks for your information and the tip! Jan 4, 2011 at 7:40
  • has the policy changed yesterday? today (2011-01-22) i posted 4 replays on stackoverflow.com within an hour and for every relpy i had to answer the capcha. the 2 months before there were only 1 capcha per day as maximum
    – k3b
    Jan 22, 2011 at 6:42
  • I just got asked to verify on SO twice in rapid succession. Can't be entirely sure that it was under 5 min, since I like to think before I answer ;) Anyway, I think there could be an even longer grace period. Why even bother to ask for verification again if it´s the same session and from the same IP?
    – Jorn
    Mar 10, 2011 at 23:15

And remove it please for trusted users.

I'm a member over a year, over 30K reputation. Am I still not trusted enough not to post spam???

  • 14
    The system trusts you not to post spam. It just doesn't necessarily trust everyone claiming to be you.
    – Jon Skeet
    Dec 17, 2010 at 13:44
  • 3
    The probability of account hijacking is very low. Handling manually one such case is a small price to pay for much improved UX for the rest of the users.
    – user136634
    Dec 17, 2010 at 13:48
  • 6
    At 10k reputation and above, you do get drastically reduced CAPTCHA timing.
    – Grace Note StaffMod
    Dec 17, 2010 at 13:50
  • 1
    I'm a member for just 2 days. But I feel that's kinda annoying and unnecessary. @Jon Skeet: Oh. So that's how the system work in here. I just know. Dec 19, 2010 at 6:33

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