a presentation on skinput. the blank slides are videos which cannot be uploaded here.

1. Name: Shashaank Mathur
Roll No.: 113
Batch: B-2

2.  Skinput: Overview
 Touchscreen and skinput devices
 Need of skinput
 Functioning of skinput
 Working of Skinput
 Bio-Acoustics
 Processing
 Armband
 Software Specifications
 Other technologies

3.  Skinput is a collaboration between Chris
Harrison at Cambridge Mellon university and
Dan Morris at Microsoft’s research lab
 Touch screen gadgets have become popular
due to the advantage they come with
 Skinput turns body into touch screen interface

7.  Device with touch available.
 Certain drawbacks of these devices present.
 Some drawbacks are:
 Small contact area
 Less accurate interactions
 Cannot make button larger without using
primary benefit of small size.

8.  Primary functions are:
 Control audio devices
 Play games
 Make phone calls
 Navigate browsing systems
 Uses series of sensors to determine where user
tapped on skin

10.  Pico-Projector
 A very small projector
 Used in compact gadgets
 E.g.. Spice Popcorn (mobile cum projector)

11.  Bio-Acoustics:
 Study of sound waves inside body
 When finger taps the skin, several distinct forms of
acoustics energy are produced
 Longitudinal Waves
 Transverse Wave
 The waveforms form the integral part of skinput

12.  Finger touch displaces skin
 Creates transverse wave (ripple)
 Sensor activated as wave passes under it.

13.  Finger impacts
 Creates longitudinal waves (compressive)
 Causes internal skeletal structure to vibrate.

15.  Each body part creates different type of
vibrations depending on:
 Bones
 Muscles
 Tendons
 These signal need to be sensed and worked
upon.
 This is done by wearing wave sensor armbands
 Sensing elements detect vibrations transmitted
through the body.

18.  Sensing elements detect vibrations transmitted
through the body.
 Contain five, specially weighted piezo films
 Responsive to a particular frequency range.

19.  Primary application, written in Java
 Three key functions
 Provides a live visualization of the data
 It segments inputs from the data stream into
independent instances (taps).
 Classified these input instances.

21.  Speech input
 Wearable computing
 Glove based input systems
 Smart fabric
 Sixth Sense

22.  Bulky armband cannot be carried everywhere.
 Research needs to be done to integrate it in
more devices

23.  Single handed gestures
 Taps with different parts of the finger
 Differentiating between materials and objects.
 Reduction in size of armband.

24.  Skin as input
 Wearable bio-acoustic sensors
 Skinput V/S Other technologies
 Improvements for skinput