User interface apparatus (1) comprising electronic user interface device (2) and storage device (3), the electronic user interface device being operative to convey information to a user, the information being derived from a resource which is remote from the user interface device, the storage device being portable and interfaceable with said user interface device and the arrangement being such that in use whilst the storage device is interfaced with the user interface device, the storage device stores a reference to the resource so that the user may access that resource at a subsequent time.The electronic user interface could be a viewer comprising a screen. So, a user could read the text of a piece of literature which is accessed from an Internet resource by way of a URL. If the user wishes to discontinue reading, the reference of that part of the text where he discontinued reading is stored on the storage device. Thus when he desires to continue reading the text at a subsequent time, insertion of the storage device into the user interface will allow him to continue from where he finished.The inventive apparatus (1) could be configured to allow the user to store any references in the subject matter being accessed and not only the reference to that part of the resource which was last accessed.The storage device (3) may advantageously be configured to allow the purchase of resources such as media products accessible via the Internet.