This document describes Skinput, a technology developed by researchers at Microsoft and Carnegie Mellon University that allows users to interact with electronic devices by tapping on their skin. Skinput uses sensors in an armband to detect vibrations caused by taps and converts them into inputs. It works by projecting buttons or a keyboard onto the user's arm and detecting the location and vibrations from taps to perform actions like texting or playing music. While promising as an "always available" input method, Skinput currently has limitations such as visibility issues if the user has tattoos and reduced accuracy for those with high BMI.

2. Appropriating the Body as an Input Surface

3. Contents
 Introduction
 What s Skinput
 How it works
 Principal of Skinput
 Steps
 advantages
 disadvantages
 applications
 conclusion

4. Introduction
 Skinput is named because it
uses the human skin.
 Skinput, is a sensor system.
This technology uses the screen as
the tracking surface or the unique
input device

5. What is Skinput
• Giving input through our skin
• Thus we can use our own skin as
input canvas.
• Developed by Chris
Harrison(Mellon university),
Microsoft research.
• Turns the body into a touch-screen
interface.

6. Principals of Skinput
• It listen to vibrations in our body
• Skinput uses a series of sensors to
track where a user tapes on his
arm.
• Provide an always available mobile
input system.
• The arm is an instrument.

7. Touch screen vs. Skinput Technology
• Needs visual assistance. • visual assistance is not
needed.

8. How it works
• It needs Bluetooth connection.
• It uses a microchip-sized Pico projector
to display menu.
• An acoustic detector to detect sound
vibrations.

9. Skin interface
• The three input location sets evaluated in the
study.

10. Steps
• Projector display mage on arm finger tap on arm
vibrations produce and
through bones onto skin
Passed
Electronic signals produced then detected by detector in
armband in the form of music
etc

11. Waves generated

12. Wearable Arm Band

13. Advantages
1. Don’t need any Keyboard.
2. Don’t need any Keyword.
3. Provide interactive play expertise.
4. Provide straightforward navigation by providing giant
buttons.
5. Arm acts as an Instrument.
6. Respond to numerous Hand Gestures.
7. Easy to access in absence of Mobile.

14. Disadvantages
• Individuals with visible disabilities cannot use this product.
• The arm band is currently bulky.
• Provide solely five buttons.
• The visibility of the projection of the buttons on the skin can
be reduced if the user has a tattoo located on their arm.
• If the user has more than a 30% Body Mass Index Skinput is
reduced to 80% accuracy.
• The easy accessibility will cause people to be more socially
detracted.

15. Applications
• I pods, Gaming, Mobile, Simple browser systems .
• The Skinput system could display an image of a
digital keyboard on a person's forearm.
• Using Skinput, someone could send text messages
by tapping his or her arm in certain places.
• While walking and jogging, we can listen to music.

16. Future Skinput
Research is going on to-
 Make armband smaller
 Incorporate more devices
 Extend accuracy level

17. Conclusion
• This system performs very well even if the body is in motion.
• In the future your hand could be your I Phone and your handset could
be watch sized on your wrist.