REV 2.1
JUL/31/2015
AN-SW-003
Baanto™ and ShadowSense™ are the trademarks of Baanto International Ltd., Canada. All other trademarks as used are the property of the respective owners.
larger percentage of the sensor reading until the finger is totally touching the surface of the glass, at which
time the finger blocks all the light and casts a very dark shadow onto the sensor.
Increasing the Shadow parameter will configure the touch screen to only process touches that cast a darker
shadow, hence reduce hover. However this also will force the touch screen to reject touches caused by a
semi-transparent fingernail or the edge of a credit card, for example.
Controlling Transparent Touches
The Shadow parameter can also allow the user to reject touch based on the transparency of an object. This
might be useful in situation where the user’s finger must generate touch, but not a drop of water, rain or any
other transparent fluids. This can be critical in applications such as signage, ticketing, kiosks and medical
devices where the screens maybe subject to liquids and must be able to differentiate between liquids and the
user’s fingers.
A user’s finger will cast a much darker shadow compared to a drop of water. Hence increasing the shadow
parameter will configure the touch screen to only process touches that cast a dark shadow and reject objects
such as water and other fluids.
3.3 ENABLE FEATURES