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A Comparison : Optical vs. Capacitive (Semiconductor) Fingerprint
Sensors |
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Optical Sensors
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Capacitive
Sensors
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Sensor Type |
Optical |
Capacitive
(Semiconductor or chip) |
Sensor Surface |
No special treatments
or maintenance required |
Usually needs surface
treatments, including ESD and other protective
coatings Coatings may be uneven, wear out over
time, degrade performance, and shorten product
lifetime |
Overall Durability |
Scratch-proof,
unbreakable glass platen made of material as hard as
quartz Resistant to shock, ESD, and extreme
weather |
Corrodes easily from
repeated handling and everyday exposure
Susceptible to damage by electrostatic discharge
Thin silicon chips are inherently fragile and
susceptible to damage by hard external impact and
scratches |
Imaging Area,
Resolution, and Size |
Large imaging area
(0.5 inch x 0.6 inch) High resolution (500 dpi)
Large image size (78,000 pixels) |
Usually smaller
imaging area, image size, and resolution due to
greater cost of manufacturing larger, high quality
chips |
Cost-Effectiveness |
Low manufacturing
cost, long life, no maintenance required |
Consistent quality
surface coatings may be expensive to produce
Replacement, maintenance, and downtime costs can add
up |
Warranty |
One year |
Information not
readily available |
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Sitemap | � Bioenable Technologies
Pvt. Ltd. 2004-2005 |
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