How do you connect a piece of
paper to the Internet of Things? Researchers show how with 'smart' paper
The University
of Washington has invented battery-free, wireless 'smart' paper that can be
controlled by gestures
Posted by Chloe
Green
from
information-age.com
on 12 May 2016
Researchers
have found a way to link real and virtual worlds through a simple piece of
paper
Radio Frequency Identification
(RFID) is a technology that has been around for more than fifty years. An RFID
is a small electronic device made up of a chip and an antenna, that works like
a bar code or magnetic strip on the back of a credit card, able to convey small
amounts of information.
Lately RFID tags have been popping
up everywhere as a versatile way to identify products, cash, people or animals.
RFID labels, tags, cards or other forms of the technology can be affixed to
objects to solve problems like stock management in shops, tracking a product as
it's being made in a factory assembly line, or identifying a person coming in
and out of a building, for example.
So far, so
useful. But now researchers from the University of Washington, Disney Research
and Carnegie Mellon have demonstrated a creative way to print or draw custom
RFID tags onto any piece of paper, turning paper into a battery-free wireless
interface that responds to gesture commands and connect to the digital
world.
It's a creative use of RFID tags
that allows you to connect a humble piece of paper to the Internet of Things
using just a pen, sticker or stencil pattern.
These lightweight interfaces can be
attached to anything from a book, or document to a paper plane, fan, windmill
or piece of origami to turn it into a 'new class' of interactive device.
Researchers demonstrated how they could quickly create a customised device to
complete a simple task.
Because paper is light,
cost-effective, easy to use and easily recyclable, people could make these
devices on the fly, control them with gestures and then discard them.
As seen in the video below, some of
the uses demonstrated by the team include: exam papers that could be completed
by touch and assessed by teachers in real time, a paper baton that can be used
to conduct music by waving it, a pop-up book that can play sounds and videos on
a computer, and coloured lights that can be controlled by waving and other
gestures.
'A piece of
paper is still by far one of the most ubiquitous mediums,' said lead
author Hanchuan
Li, a UW doctoral student in computer science and
engineering. 'If RFID tags can make interfaces as simple, flexible and cheap as
paper, it makes good sense to deploy those tags anywhere.'
'These little tags, by applying our
signal processing and machine learning algorithms, can be turned into a
multi-gesture sensor. Our research is pushing the boundaries of using commodity
hardware to do something it wasn’t able to do before.'
Shwetak Patel, the Washington
Research Foundation Entrepreneurship Endowed Professor in Computer Science
& Engineering and Electrical Engineering added: 'The interesting aspect of
PaperID is that it leverages commodity RFID technology thereby expanding the
use cases for RFID in general and allowing researchers to prototype these kind
of interactive systems without having to build custom hardware.'
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