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Capacitive Fingerprint sensors capturing the mass market
Jan Johannesson, VP, Strategic Planning and Portfolio Management, Fingerprint Cards AB
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• Swedish biometry company established 1997
• Public company, listed on Stockholm Nasdaq OMX
• Market cap of over 450 MUSD, almost 50 MUSD in cash
• HQ: Sweden
• Offices in Copenhagen, Tokyo, Seoul, Shanghai, Taipei, Silicon Valley
• Large patent portfolio with 100+ patents
• +15 years touch sensors track record
⁻ Solid industry experience
⁻ Sold millions of units
• Fabless operation
Company Overview, Fingerprint Cards AB
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History of Fingerprint Recognition
• Friction ridge skin impressions were used as proof of a person’s identity in China perhaps as early as 300 B.C.
• In 1788 the uniqueness of the skin was recognized in Europe
• Sir Francis Galton, described minutia, hence also called Galton details / Minutiae
• Forensics: The Rojas case, 1892 is believed to be the first criminal found guilty through fingerprint evidence in the world
Biometrics isn’t new so what is?
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• Schematic attachment rates in mobile phones for GSM, Camera, 3G, Wi-Fi
• Fingerprint sensors to take the same path as other new technologies
Evolution of mobile devices
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• Multiple sensing technologies are available and they differ a lot!
– Capacitive, Optical, Thermal etc.
• Key for mass market adoption is cost, size, reliability and performance
• The physical sensor will always be exposed to the consumer, big focus on customization and durability
Fingerprint sensing technologies
Confidential 7 10/5/2014
Fingerprint sensing technologies
Low
High
Low High
Optical
Ultrasonic
Thermal
Pressure
Consumer product integration acceptance
C
o
s
t
Capacitive
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Capacitive technology
• Potential difference between finger surface and sensor created by changing finger potential – Finger potential changed by injecting a pulse in the finger through the bezel – Capacitance between finger and sensor pixel elements can be measured after
creating a potential difference between finger surface and sensor • According to parallel-plate model, capacitance is directly proportional to the plate
separation • Higher capacitance at finger print ridges, lower capacitance at finger print valleys
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• Swipe
– Millions of devices deployed, slim and low cost
• Touch
– Unrivaled ergonomics and response time
• Devices and Segments
– Smartphones, PC, Tablets, Banks, Security…
Implementations with capacitive sensors
Confidential 10 10/5/2014
Vision: My device knows me
Buying tickets
Healthcare access
Mobile commerce internet banking
Internet access
Unlocks and personalizes my car
Controls my home security and IoT
Personalizes my home entertainment
Unlocks my PC