Subject:
|
Re: Retina scanner?
|
Newsgroups:
|
lugnet.off-topic.geek
|
Date:
|
Sun, 6 Apr 2003 16:59:08 GMT
|
Viewed:
|
2541 times
|
| |
|
|
Okay, you made a point. It should be called "cornea photographer" or
something like that.
Robert Seifert
(but still, isn't it good approximation? I mean it's still lego, you cannot
expect something such sophisticated as retina scanner. That was what I meant)
>
> You can call it nitpicking if you ignore the implications, but it's like
> saying you've built a fingerprint scanner when what you're actually doing is
> photographing the _back_ of someone's hand.
>
> From a few basic measurements of the image, you can probably tell a handful
> of people apart, but it's not the full job because you're not actually
> scanning what you said you were.
>
> The cornea doesn't have the distinct patterns like the blood vessels on the
> retina, and it's easily disturbed by dirt, irritation, the amount or
> moisture on the surface, lighting, or contact lenses. That's why the secure
> option is to direct a laser straight through the lens of the eye and scan
> the retina, which this isn't doing.
>
> Jason Railton
|
|
Message has 2 Replies:
 | | Re: Retina scanner?
|
| (...) Well, call it an 'eyeball scanner' or something. I suppose I could equally come down on someone who's made a hotdog stand that doesn't really cook hotdogs, or a minifig Outside Broadcast Unit that doesn't really take live video (oh wait a (...) (23 years ago, 7-Apr-03, to lugnet.off-topic.geek)
|
Message is in Reply To:
| | Re: Retina scanner?
|
| (...) You can call it nitpicking if you ignore the implications, but it's like saying you've built a fingerprint scanner when what you're actually doing is photographing the _back_ of someone's hand. From a few basic measurements of the image, you (...) (23 years ago, 2-Apr-03, to lugnet.off-topic.geek)
|
10 Messages in This Thread:
  
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
