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Touchscreen comparison
The most popular touchscreen technologies and their respective attributes and uses are
listed below.
Human Interfaces
127
Surface
wave
technology
Resistive technology
Capacitive technology
I
nfra-red technology
P
rojected capacitive
technology
Principle of
operation
Acoustic waves are
propagated across the
surface of a clear glass
overlay.
A transparent,
conductive layer
senses the contact
and computes X and
Y co-ordinates.
Sensitive to the small
electric charges on
the fi
ngertips.
Infra-red waves are
propagated across the surface
of the screen.
Similar to the
capacitive
technology.
Advantages
and
disadvantages
Clarity and durability.
Toughness and
reliability. Drift-free
performance.
Can be activated by
gloved hands.
Cost-effective.
Consistent and
durable performance.
Can be gasket-sealed
for added protection.
Good Optical clarity.
Good resistance to
liquid and chemical
contamination.
Good resistance to
vandalism.
With no screen overlay, for
best possible image quality.
Polycarbon overlay where
vandal proof build is required.
Works with fi

nger, gloves or
any stylus activation.
Higher cost than Capacitive/
Resistive.
Good optical clarity.
Works with gloved
hands.
Can be fi
tted behind
protective glass,
polycarbon will still
work.
Highly vandal
resistant.
Applications
Highly graphical
public display systems.
Shopping mall
directories. Video-
gaming terminals.
Computer-based
training systems.
Catalogue shopping
systems. Video lottery
kiosks. Computer-based
training programs.
In environments
where equipment
must stand up to
liquids and other
contaminants:
restaurants, factories,
and hospitals.
Suitable for outdoor
and industry use.
Suitable for Food Industry
application.
Suitable for outdoor
use.