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jet fighter pilots and supplements the wearer's view of the real world with a virtual data
The AR headset uses tiny displays embedded in its glass lenses. Images are sent from a
handheld computer, for example a PALM pilot, via a radio frequency or short-range
wireless networking devices such as Bluetooth.The AR system also includes a GPS chip so
that the headset knows where it is, and a gyroscope to identify the direction the wearer is
looking.The technology as developed originally that did not work very well in sunlight and
consumed a lot of power, but it has been further improved since than. Researchers at the
University of Washington developed a so-called retinal scanning display (RSD) that uses a
laser to write an image on the retina at the back of the eye.The image is sharp, shows up in
bright sunlight, and needs significantly less power than projecting text onto an external lens.
One potential application that is currently developed and also of interest to cultural
heritage institutions are so-called guidebook glasses.They allow the wearer to receive
localised information that is displayed as data overlay on the glasses and supplement his/
her view of visual field with a data layer.
In the future, this technology could replace current audio guides in museums, although
it will definitely need some acclimatising on the part of the visitor.
User-focused content management: new tools for personalisation and
Traditionally, acting as intermediaries and helping users to discover resources or make
recommendations has been a core task of librarians, archivists and to a lesser extent, to
museum curators. Now,"personalisation offers a technology that empowers users to become
more participative in this process; it can be employed by the intermediaries (i.e. librarians,
curators, archivists) as an assistive tool in the selection and filtering of information to
provide the user with what they need most." (Bonett, 2001)
Personalisation services can help users of cultural heritage resources to:
collect and group favourite or most used resources and store them for future use
("link baskets","my resources", etc.),
customise the content on the page, by selecting general preferences (particular
subjects, resource locations, etc.),
be informed about changes on the web site (news alerts),
customise the interface according to personal preferences,
have direct access to the intermediaries,
receive notifications on their favourite subjects and areas of interest from cultural
heritage institutions (i.e. list of recently acquired books, planned exhibitions or
lectures, etc.),
join mailing lists in one's areas of interest.
The idea behind personalisation and customisation systems is to employ technology to
get a more complete picture of the users preferences, desires and needs.This allows identi-
fying customer segments that can then be served with content that fits their particular
needs. Customisation usually means providing a finite set of choices that can be selected from
customisation templates.This requires active participation of the user. Here the user is
actively in control which kind of content will be presented. Personalisation, on the other
hand, is more technology and behaviour driven, and involves predicting the needs of a user
based on analysis of previous actions or by making recommendations based on what like-
minded people enjoyed.