Information Technology Reference
In-Depth Information
formation gets lost. Future research should therefore not only address the question
of how a set of flexible displays can be quickly bound to a set of documents but
also the issue of how interaction techniques and tangible tools can compensate for
the physical information that gets lost when removing the unambiguous mapping
between a document page and its physical carrier surface.
Towards Fully Mobile Pen-and-Paper Interfaces
Most prior applications either cannot be used at all in mobile settings or only parts of
their functionality are available in a mobile setting. This is due to the fact that most
of the more complex functionality requires that data be made available to a back-end
system. While today's digital pens can be used in a fully mobile mode when data is
kept on the pen, sending data in real-time to a back-end system requires additional
hardware. In this case, current pens require another mobile device they can stream
pen data to via a Bluetooth connection.
Only a very limited number of previous systems has used this setup (most notably
the EdFest system [134, p. 153 ff.]). In the future, we expect more applications that
couple paper and a digital pen with a mobile phone. The advantage of this device
federation is that mobile phones are widely deployed and fit perfectly to the mobile
setup. The mobile phone can act as a communication hub between the pen and the
network. It can run applications, and it can provide feedback on a display or via
auditory and haptic channels. Hence, the coupling of pen, paper and a mobile phone
requires only standard hardware and results in a powerful device federation. Future
work should examine how the user interface can be repartitioned between pen-and-
paper and the mobile phone. If the same pen can be used to interact on paper and on
the display of the mobile phone, paper and display merge in a way that is similar to
the interaction techniques presented in this topic. The difference is that in contrast
to our techniques, not smaller paper is placed on a larger display, but a small display
is placed on paper, which creates new challenges.
Support of Further Manipulations of Paper
In our work, we deliberately decided not to augment paper by electronic components
nor to use an extensive solution for tracking paper in physical space. This allowed us
to maintain paper as an inexpensive medium, on which digital contents can be easily
printed, and which can be used virtually everywhere. A drawback of this approach
is that some interactions with paper cannot be captured. Our core interactions rely
on writing with the pen on paper and on changing the physical location of paper
pages. Other interactions, such as folding a sheet of paper, are not comprised.
Emerging novel tracking technologies will likely resolve this trade-off. Recently,
inexpensive depth cameras, such as the Microsoft Kinect 1 ,havecometothemar-
1
http://www.xbox.com/kinect
Search WWH ::




Custom Search