Touch Technologies Available in Elo Touch Solutions Large Touch Screen Monitors and All-In-One Touch Computers

Key	Best in category	Some advantage	Neutral	Some Disadvantages	Not Recommended

	APR	AccuTouch 5-wire resistive	IntelliTouch SecureTouch surface wave	Surface capacitive	CarrollTouch infrared
Performance:
Response Time1
Sensitivity (required touch force)				2
Resolution
Accuracy
Calibration Stability
Drag
Touch and Hold	3
Z-axis
Simultaneous Touch Rejection4
Immunity to objects on screen
Immunity to Unintentional Touch
	APR	AccuTouch 5-wire resistive	IntelliTouch SecureTouch surface wave	Surface capacitive	CarrollTouch infrared
Input Flexibility:
Finger
Glove
Fingernail		5
Credit Card		5
Hard Tip Stylus		5
Soft Tip Stylus
	APR	AccuTouch 5-wire resistive	IntelliTouch SecureTouch surface wave	Surface capacitive	CarrollTouch infrared
Optics:
Light Transmission
Antiglare
No Change to LCD Color
	APR	AccuTouch 5-wire resistive	IntelliTouch SecureTouch surface wave	Surface capacitive	CarrollTouch infrared
Mechanical:
Zero Bezel Available
Narrow Border Available
	APR	AccuTouch 5-wire resistive	IntelliTouch SecureTouch surface wave	Surface capacitive	CarrollTouch infrared
Electrical:
Low Power
Immunity to Surrounding Electric or Magnetic Fields
Low Emissions
	APR	AccuTouch 5-wire resistive	IntelliTouch SecureTouch surface wave	Surface capacitive	CarrollTouch infrared
Environmental:
Temperature
Humidity
Shock; Vibration
Altitude
Chemical Resistance
Liquids
Sealability6
Scratch Resistance
Breakage Resistance			/7
Safe Break Pattern			/8
UV Light
High Ambient Light
Durability; Wear

Notes

¹ Response time is generally specified as the time between touch detection and coordinate report by the controller. It does not include te time for the touch location to be presented on the display (additional layers of hardware, driver, processing, operating system overhead and application processing can all add delays).
² Capacitive may not be responsive to people with low body capacitance or in very cold temperatures.
³ This feature is currently in development
⁴  means that 2 simultaneous touches are averaged;   means that the 2nd touch is ignored.
⁵ Fingernail, credit card and hard tip stylus can all be used on resistive but can damage the flexible top layer and lead to failure.
⁶ Open-frame monitors can be sealed to NEMA-4 or higher, depending on customer implementation.
⁷ IntelliTouch surface wave is available as SecureTouch, which meets UL-60950.
⁸ SecureTouch is available with tempered glass.

No guarantee of acceptability of the technology to the application is implied by this quick reference table.