Arm as a touchscreen 1

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Information about Arm as a touchscreen 1

Published on April 21, 2012

Author: abhi230789


Presented ByAbhijeet S. Kapse Guided ByProf. S.B. Somani MITCOE

 Introduction What is Skinput Principle of Skinput How it works Advantages Applications Future Implementation Conclusion MITCOE

 Mobiles becomes ubiquitous Mobility, flexibility, responsiveness getting more demands Devices with small sized have some limitations Can’t make buttons and screens large without losing benefit of small sized Microsoft introduces new flesh-control input technology-”Skinput” MITCOE

 Collaboration between Chris Harrison at Carnegie Mellon University and team of Microsoft research lab. Touch-Screen gadgets have become popular due to the advantages they come with Skinput turns the body into a touch-screen interface MITCOE

 Skinput allow the users to simply tap their skin in order to control mobile applications It applies the use of series of sensors to determine where user taps on their arms Each part of body creates different types of vibrations depending on features of bones, muscle and tendons MITCOE

Bio- AcousticsBluetooth Pico- Projector MITCOE

Pico-Projector: Small Sized Projector to Display menu Widely Used in Gadgets like Mobile , Camera MITCOE

Bio-Acoustics: Study Of Sound waves inside living body When a finger taps the skin, distinct forms of acoustics energy are produced- Longitudinal waves Transverse waves MITCOE

Transverse Wave Propagation Longitudinal Wave Propagation • Finger Impacts creates • Finger impact creates longitudinal transverse waves(ripples) (compressive)waves • Sensor is Activated as • Causes internal skeletal structure wave passes underneath it to vibrate MITCOE

• Wave Sensor Armband• Responsive to the Vibrations MITCOE

Processing : Model Vibrations are Capturedfrom Sensors and Converted to Digital signal form This is connected to Mobile device Via Bluetooth A Software to match sound frequencies to Specific skin location is used Corresponding Action is implemented in Device MITCOE

Fingers•Tapping on tips of fingers• Accurately Interact with eyes free mannerArm• Maximum Surface area• Provides 10 Different Locations MITCOE

Ten Channels of acoustic data generated by three finger taps on the Forearm, followed by three taps on Wrist MITCOE


 No need to interact with the gadget directly. Don’t have to worry about keypad. People with larger fingers get trouble in navigating tiny buttons and keyboards on mobile phones. With Skinput that problem disappears. Can be used without visual screen MITCOE

 Mobile i-Pods Gaming Simpler Browsing System MITCOE

 Small Sized Pico-projector Wrist watch size sensor armband MITCOE

 We have presented the approach to appropriating the human body as an input surface. We described a novel wearable bio acoustic array used to detect and localize finger taps on the hand and forearm. MITCOE

1) Chris Harrison, Desney Tan, and Dan Morris “Skinput: Appropriating the Skin as an Interactive Canvas” Microsoft Research 2011.2) Chris Harrison, Scott E. Hudson “Scratch Input: Creating, Large Inexpensive, Unpowered and Mobile Finger Input Surfaces” UIST 2008.3) Amento, B.Hill, W.Terveen “The Sound of one Hand: A wrist- mounted bio-acoustic fingertip gesture interface” CHI’02.4) Thomas Hahn “Future Human Computer Interaction with special focus on input and output techniques” HCI March 2006. MITCOE


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