Invention Grant
US09229671B2 Method of embedding optical security feature using virtual printer and security feature service 有权
使用虚拟打印机和安全特征服务嵌入光学安全功能的方法

Method of embedding optical security feature using virtual printer and security feature service
Abstract:
A method for embedding an optical security feature in a digital document with a virtual printer and a security feature service and then sending the digital document to a hardware printer.
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