Originally Posted by tribalogical
Using an Iris Scanner that fits comfortably inside a smartphone?
Not yet, anyway.
Yes, right now. The leading researcher in the world on iris recognition flat out states, “We can use an iPhone, an iPad, even Google Glasses as well as any digital camera."
They have already used the technology inside of a smartphone as an iris scanner. Now, as some people have pointed out, some hardware improvements would be needed to make it more robust and as I pointed out any IR filters would need to be removed to help increase secutiry, but there is nothing necessary to keep the current level of technology from being used as an iris scanner.
However, this doesn't automatically mean that it will be a good implementation.
Originally Posted by Yada Yada Yoda
Interesting read but if read properly it looks like it requires an additional light source to induce dilation of the pupil (flickering light, pen light etc).
Now wouldn't that be amusing if each time you wanted to unlock the phone, it caused a flash in your eyes. It be flashy for sure :-D
Not sure how the eye works exactly but it might be possible to reach to smaller levels of movement I guess.
Another thing I wonder whether it would consistently work in different levels of lights, particularly low light. Most of these iris recognition technologies are used in relatively bright areas with consistent lighting (airports, security check points, etc). New algorithms and possibly technologies would have to be used to adapt to a less controlled situation such as that experienced by a typical phone user.
The point of the article about forcing eye contraction was to catch people trying to avoid detection / recognition by an iris scanner. In other words, if you were a terrorist trying to sneak into a country you could try to avoid detection be the means stated. Interestingly, a smartphone's implementation is almost the exact opposite. Any of these methods wouldn't give access to the phone they would fail the match and keep the phone locked.
Now, light levels and light temperature is a very valid concern. To address this I would expect that phone manufacturers would have to build in flash/illumination LEDs into the front of the camera. One of these LEDs should also be a near IR LED for IR illumination. As for the algorithms, you might be correct, although it seems to me that as long as the phone can get a good image then the algorithm should be just fine.
Originally Posted by nikilok
The issues with iris scanning.
1) so if your wearing regular glasses it could distort the sensors view at the iris because of lens refraction or lens glare from a light source.
2) what if your wearing sun glasses on a sunny day outside ? You expect me to take it off to unlock my phone ?
3) what if your unlocking ur phone in a dark room in the middle of the night. Expect me to turn on the lights to unlock ?
4) you need to point the device at ur face to unlock.
5) what about people wearing colored contact lenses ?
Enough said. This is bound to fail.
1) I have read a few articles which state that regular glasses do not interfere with the scan.
2) Sunglasses would interfere with the scan. Just like wearing gloves interferes with a fingerprint scanner. So, yes, you would be expected to take off your gloves for TouchID and your sunglasses for an iris scan.
3) This one is a very valid concern and I would say that any good implementation of this would require illumination LEDs to be installed on the front of the phone. If momentary night blindness is a concern due to illumination the phone could revert to IR illumination only if the environment is too dark.
5) People who wear colored contact lenses might not be able to use this, or they might. The article that I linked to mentioned a way around this, but I don't know what it entails.
You are seeming to argue that it shouldn't be implemented because it might cause some inconvenience. Well, any security causes some inconvenience. If your convenience is more important to you than security then I am sure that you could turn it off, just like with any smartphone's security feature.
Again, I am not saying that iris scanning is necessarily a better solution than fingerprint scanning, it is just more secure, while also being less convenient. The ideal solution is a phone with both, and I hope that Apple eventually gets around to implementing both.
I think that Samsung will be the first to release it though, and I think that implementation will be Samsung's usual, terrible implementation.