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点点图片验证码，求指教！该如何处理

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Release： 2016-06-13 10:00:51
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点点图片验证码，求指教！
通过点击图片来输入验证码，而不是输入数字

demo


------解决方案--------------------

探讨

但是目前好像没有能输出数字出现坐标的orc吧，他们输出直接就是数字了。

------解决方案--------------------
想法比较新颖，但也有些问题：
1、图片中的数字只是加个圈，不做扭曲变形处理，肯定是不行的，很容易被识别；
2、返回给服务器的是坐标，给图片中的数字加上圈之后，坐标不是更容易通过识别获得吗？因为只有4个数字，排序成功的概率也就提高了；
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