图片验证的必要性在哪里?为什么要图片验证?验证码输入了半个小时没有一次是正确的,大小写字母根本无法区分!!!!!!!!!!! 1 vote Vote Vote Vote We're glad you're herePlease sign in to leave feedback Signed in as (Sign out) Close Close Vote We’ll send you updates on this idea Anonymous shared this idea · Jun 1, 2020 · Flag idea as inappropriate…Flag idea as inappropriate… · Edit… · Delete… · Admin → Tweet 0 comments Add a comment… We're glad you're herePlease sign in to leave feedback Signed in as (Sign out) Close Close Post comment Submitting... An error occurred while saving the comment