Have you ever been frustrated when you work in group on a digital information and when you try to collaborate with others using a single laptop and data projector?
While everybody is able to see what is displayed on the screen it is too difficult for all of you interact with it. Basically, one person is in control of the computer, using a single mouse and a keyboard, while the others look on the screen. It might be difficult to hand over control between members and would be awkward to ask for that. But still in such groups there is a need to interact to create that kind of digital information.
A new generation of shareable techniques, that are designed specially for more than one person to use at a time, can enable groups to collaborate more effectively to achieve their object. The technologies include gesture-based wall displays, multi-touch tabletops and interactive tangibles.Shared technologies were designed to allow groups comfortably and easily to access, create, interact with and move digital content in an equitable and free-flowing manner.
Can you imagine how comfortable people feel knowing that their actions and their effects on a shared display are highly visible to others in a group setting this may also affect their willingness to participate. Such self-consciousness can deter people from taking part in a group activity.interconnected displays have been embedded in walls, tables and other pieces of furniture that are interacted with, via wireless handheld devices, fingers, pens and gestures.Here are some different kinds of shareable interfaces :
Gesture-based walls:
The main definition of these interactive wall is a very large, high resolution display which can be sensitive to touch or gesture. The content displayed on these interactive screens is generally the same that could be found on a desktop computer but magnified onto a larger area.
We are going to provide you here some interesting examples:
Gesture-based wall in a Hospital room works a s soon as a doctor comes in,one wall of the room transforms into a projection screen on which patient records can be displayed. Using a hand-gesture based user interface the doctor can access specific files to show the patient the results of surgery.
If you had watched CSI NY series you would probably know that they have used these interavtive interfaces alot to easily match DNA result, share information and of course interact in one screen.
Multi-touch tabletops:
Small groups find it more comfortable working together around a tabletop compared with sitting in front of a PC or standing in a line in front of a vertical display.The familiar and lightweight action of touching a surface may also make it easier for people to take part in a social/public setting. User studies have shown how groups of people, new to tabletops, find it easy and enjoyable when sharing and assembling of sets of digital images for a variety of collaborative tasks.
Advantages:
- Useful for group work rather than than single user interfaces.
- Provide equal and flexible form of collaboration.
Disadvantages:
Research and Design issues:- delicate and prone to breaking. For example, many touchscreen products break down or become scratched from users constantly touching the screens.
The user interface has two sides: the input side where the user inputs information, indicating by various conventions and controls what he wishes accomplished; and the output side where the machine provides feedback and other assistance to the user in command specification, and provides various forms of information portrayal.
First here are few high-level assumptions about the system usage environment that affect the user interface design and then we discuss some of the lower level issues and the specific techniques used to deal with them:
- Coordinated Set of User Interface Principles.
- Ease of Communication Between Subsets and Addition of Workshop Domains.
- User Programming Capability Or User Interface Extensibility.
- Tools Embedded in a Computer Network.
The user interface must implement a man/machine dialog. Here are some issues from machine to man:
1. Information space.
the user needs information to help him to know where he has been, to know where he is and to know where he can go from here.
2. Subsystem or Tool Space.
In workshops containing many tools and commands, the user needs to know which tool or tools are active, which ones he was in previously and their order, and which ones he can enter from here.
3.Command Syntax Space.
During the specifications of a command, the user may need to know what he can or is expected to do next and how to back up to a previous point.
http://shareitproject.org/
http://rj3sp.blogspot.com/2008/12/philips-health-and-wellness-windows.html
http://diuf.unifr.ch/people/lalanned/Seminar/Seminar0506/interactive_walls__almeidap.pdf
http://mcs.open.ac.uk/pervasive/pdfs/RogersHCI08.pdf
http://www.ehow.co.uk/info_8396116_disadvantages-advantages-interactive-media.html
http://www.dougengelbart.org/pubs/augment-27171.html
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