| 摘要 |
An identifier corresponding to an object is used in establishing links to related electronic resources. The identifier can be obtained by decoding a watermark, performing a hashing algorithm on content data, reading a bar code, etc. The object can be physical (e.g., a magazine page) or electronic (e.g., music or image data). Suitable devices useful with this technology include cell phones, PDAs, and the like, which may include sensors for capturing object data. The associated electronic resource can be a web site from which information, image/audio content, etc., is provided. A variety of other features and arrangements are also detailed.
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