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iFixit's iPhone 5s Teardown Reveals Touch ID Fingerprint Sensor, 'Invisible' M7 Chip

katewes said:
Not all tech-savvy people are poor.

Frugality is a habit, maybe not of all the middle-class, but of many of history's super-rich.
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Let me say this, SeaFox, when you take your attitude, and multiply your attitude by half the population of the U.S. - it gives foreigners some perspective of why the U.S. is submerged in debt.
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WHOOSH! :rolleyes:

Maybe I'll write you a longer reply later from my iBook G4 -- whose screen I repaired myself (bad data cable) with directions by iFixIt.
 
Diatribe said:
http://weblog.invasivecode.com/post/57447455012/will-a-fingerprint-sensor-be-apples-next-hit

If you search for the specifications of a CMOS fingerprint device, you will find a number representing the lifetime of a device. That number is expressed in number of touches (before it completely dies).
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That article was written by someone heavily biased towards optical fingerprint solutions, and against capacitive sensors.

It's also out of date. Today's fingerprint sensors have a lifetime specification in the high hundreds of thousands of swipes, if not in the millions. More than we'll ever do.

Moreover, that's wear from swiping, an action which isn't present in the case of Apple's static sensor.

As an aside, many swipe sensors use silicon carbide as the protective layer, a substance that is even HARDER than sapphire.
 
chrmjenkins said:
The mechanical engineer would be the one to decide if the battery is glued or not.

source: I'm an EE. ;)

edit: Chipworks found the M7:

https://twitter.com/Chipworks/status/381101965767213057

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Yep, just like I suspected in my earlier posts - it's an off-the-shelf or just a slightly customized Cortex-M3 MCU and it was hiding under the black foamy filler around the connectors which iFixit did not bother to peel off! So long for everybody's theories that it's definitely, naturally and logically a part of A7 itself :p. Now I'd like to see the same area on 5c - will we find an empty footprint in there?
 
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kdarling said:
That article was written by someone heavily biased towards optical fingerprint solutions, and against capacitive sensors.

It's also out of date. Today's fingerprint sensors have a lifetime specification in the high hundreds of thousands of swipes, if not in the millions. More than we'll ever do.

Moreover, that's wear from swiping, an action which isn't present in the case of Apple's static sensor.

As an aside, many swipe sensors use silicon carbide as the protective layer, a substance that is even HARDER than sapphire.
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As I said, I am pretty sure Apple solved any issues or they would never have put it into the iPhone. I was just pointing out that there were issues in the past with the sensors.
 
I love seeing the teardowns but it makes me sad that a phone will not be used by one of the people who stood in line yesterday waiting for one (especially the hard to get Gold one)
 
mdelvecchio said:
are you an electrical engineer? nope. so you really don't have any idea why electronics companies glue components to their chassis...do some research. go talk to some hardware guys are your local university.

it's not a silly conspiracy.
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Well, in addition to that answer, either the electrical or mechanical engineer can answer why batteries have suddenly got to be glued when for almost a decade Apple's devices and Macs haven't needed the batteries to be glued. That is the more precise question.
 
so, THATS what the "M" stands for... :eek:

So, our phones are not only magical, they are also STILL repairable

Take that Macbook Air :p
 
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