Appropriating the Body as an Input
Overview: what is Skinput
• Skinput is a collaboration between Chris Harrison of Carnegie
Mellon University and Dan Morris at Microsoft’s research lab in
Redmond in Washington.
• Due to the advantages of Touch Screen Gadgets , they have
become very popular .
• Skinput is also an Touch Screen one which was using body as
What Skinput does
Skinput allows users to simply tap their skin in order to
control audio devices, play games, making of calls, and
navigate different types of browsing systems hierarchically.
It applies on the skin on the series of sensors , where they
can be activated on the arm at different places.
Each part of the body can be created by the different types
of variations on the depending on the bones, muscles and
Skinput works by:
A very Small Projector basically used in Gadgets.
Ex: Spice Popcorn(mobile cum Projector)
When finger taps on he skin , it leads to formation of two
different types of waves called as
These waves makes to activate whole concept of Skinput.
These signals can be sensed and worked upon by wearing Wave
Sensor Arm Bands.
The decision to have the two sensor
packages was focused by our
motivation on the arm.
We employ a Mackie Onyx 1200F
audio interface to digitally capture
data from the ten sensors.
Each channel was sampled at
5.5kHz a sampling rate.
This program performed three key
First, it provided a live visualization of
the data from our ten sensors
Second, it segmented inputs from the
data stream into independent
Third, it classified these input
• For the Experiment, we
selected three input groupings
from the multitude of possible
location combinations to test.
• We believe that these
groupings, are of particular
interest with respect to
interface design, and at the
same time, push the limits of
our sensing capability.
Walking and Jogging
Surface and Object Recognition
Identification of Finger Tap Type
Segmenting Finger Input
Accuracy of the three whole-arm-centric
Accuracy was significantly lower for
participants with BMIs above the 50th percentile
Skinput is an appropriating the human body as an input surface which
was a novel, wearable bio-acoustic sensing array that we built into an
armband in order to detect and localize finger taps on the forearm and
hand , it even performs well when the body is in motion also