Japanese technology company Fujitsu is in the process of
developing a new technology which could turn real world objects, such as paper,
into touchscreens. The technology uses a projector and webcam in combination
with image processing technology. The webcam tracks whenever the user’s finger
comes in contact with the object being used as the touchscreen. This allows the
user to define the borders of the touchscreen they want to use. The system only
tracks movements of a single finger, as to not confuse the interactions with
basic hand movements. The user may then highlight pictures or information from
the object they are using and the technology will instantly copy it and put it
to the side as a virtual file. Fujitsu gave an example presentation, in which
they were able to copy information from the uneven surface of a book and turn
real-life Post-It notes into virtual ones. The full possibilities of the
technology, as well as what surfaces it will and won’t work with, are currently
unsure.
http://mashable.com/2013/04/16/fujitsu-paper-touchscreen/#mwtg325