Providing interaction between a user with remote data stored on a network is disclosed. A physical medium has at least one hot spot encoded with linking data enabling access to remote data. The linking data is encoded according to a spectral encoding scheme. At least part of the linking data is visible and is blended with and appears to comprise at least part of an un-encoded graphic or text visible on the physical medium such that it is not apparent to a viewer of the physical medium that said linking data is encoded in said at least one hot spot. A sensor measures the hot spot and decodes the linking data. A transmitter coupled to the sensor transmits the linking data to a remote computer system. The remote computer system responds to the linking data to retrieve the remote data and present the remote data to the user.