html - HTML Content and watermarks

Question

Is it possible to watermark or otherwise secure HTML content so it can be printed but not photocopied after it's printed? For an application that prints passes, for example.

Answer 1

This is way beyond HTML/CSS's capabilities. If you watermark an image then it will have to show up on the printed copy to be visible in a photocopied version, unless you are using a very sophisticated printer.

Answer 2

No, that is simply not possible.

Answer 3

您可以添加一个特殊的打印布局，它只是隐藏孔页：

<style type="text/css" media="print">
* {display:none;}
</style>

或者尝试html不确定*旧 IE 版本是否支持星号。