If the user name is in any Reader or Author field on the document (you can have as many as you want of each type), then that user can read and edit the document.

如果文档的任何Reader字段或Author字段(每种类型的字段可以有任意多个)中存在该用户名称，该用户就可以读取并编辑此文档。

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Other applications such as NFC (Near Field Communications) have been slow to gain traction as it is reliant on the card reader infrastructure being upgraded.

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