| 摘要 |
A method of retrieving information using a device is disclosed. Data encoded on a surface of the print medium is read using a sensor module of the device. The data encodes a print media identifier which uniquely identifies the print medium and position data with respect to the surface of the print medium. The print media identifier and the position of the sensor module relative to the surface of the print medium are determined from the data encoded on the surface. Finally, information is retrieved from a database. The information is indexed by the print media identifier, a region with respect to the surface of the print medium, and an identity of the device, the position of the sensor module being within the region.
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