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| [* black] [* black] A [http://en.wikipedia.org/wiki/CMOS|CMOS] chip, the Touch ID is essentially a bunch of very small capacitors. When your finger touches the chip, the electrons on your finger are transferred to the chip, creating an "image" of the ridges on your finger that make up your finger print. [* black] This type of sensor has been used before. Apple bought [http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=1&p=1&f=G&l=50&d=PG01&S1=(20130181949.PGNR.+AND+20130718.PD.)&OS=dn/20130181949+and+pd/7/18/2013&RS=(DN/20130181949+AND+PD/20130718)|AuthenTec's patent] with the likely intention of [http://appleinsider.com/articles/12/08/16/authentec_smart_sensor_appears_key_to_apples_urgent_acquisition|future touch screen technology]. [* black] What remains to be seen is if the sapphire crystal covering the sensor can protect it from [http://weblog.invasivecode.com/post/57447455012/will-a-fingerprint-sensor-be-apples-next-hit|degrading over time], like most CMOS fingerprint sensors. If not, this fingerprint scanner could become a ticking time bomb, just like the battery. |
| [* black] [* black] A [http://en.wikipedia.org/wiki/CMOS|CMOS] chip, the Touch ID is essentially a bunch of very small capacitors. When your finger touches the chip, the electrons on your finger are transferred to the chip, creating an "image" of the ridges on your finger that make up your finger print. [* black] This type of sensor has been used before. Apple bought [http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=1&p=1&f=G&l=50&d=PG01&S1=(20130181949.PGNR.+AND+20130718.PD.)&OS=dn/20130181949+and+pd/7/18/2013&RS=(DN/20130181949+AND+PD/20130718)|AuthenTec's patent] with the likely intention of [http://appleinsider.com/articles/12/08/16/authentec_smart_sensor_appears_key_to_apples_urgent_acquisition|future touch screen technology]. [* black] What remains to be seen is if the sapphire crystal covering the sensor can protect it from [http://weblog.invasivecode.com/post/57447455012/will-a-fingerprint-sensor-be-apples-next-hit|degrading over time], like most CMOS fingerprint sensors. If not, this fingerprint scanner could become a ticking time bomb, just like the battery. |