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Old Feb 12, 2013, 04:52 PM   #76
Squilly
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Originally Posted by chown33 View Post
Please explain. I don't think my skepticism at this unsubstantiated claim is misplaced, since you've given no indication that you have domain-specific knowledge of trademark law.


I also see from the existing UniShield product's website:
Unishield is manufactured exclusively by Unitech, LLC. This unique, water-based material is extremely conductive and has seen extensive application as a safe and effective EMI shield for many nonmetallic surfaces. Unitech engineers have developed various formulations of Unishield to specifically address problematic RF emanations in commercial, military and governmental environments.
So there's the RFID shield part of your case idea.
Where? Radio Frequency emanations?
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Old Feb 12, 2013, 05:09 PM   #77
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Where? Radio Frequency emanations?
Exactly. Not to mention the fact that if your case is already unibody Aluminum with 360 degree coverage it wouldn't need any additional RFID shielding as it would be a decent Faraday cage. Of course it wouldn't allow any of the wireless features of the phone to work either.

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Old Feb 12, 2013, 05:10 PM   #78
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Where? Radio Frequency emanations?
You cannot be serious.
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Old Feb 12, 2013, 05:13 PM   #79
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Where? Radio Frequency emanations?
Come on man...
I'm no expert, but this is simple stuff. RFID is radio frequency identification - hence the RF part.
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Old Feb 12, 2013, 05:19 PM   #80
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Perhaps I'm missing a key point about these things then. I've seen people with CCs that have chips in them that allow you to simply tap the card instead of swipe it. That's the only benefit I've been able to deduce. Otherwise I've heard that skimming the data off of the chips is even more trivial that trying to install a swiping skimmer. So far all I see is increased risk with negligible benefit?
Small purchases are possible, at certain stores, without a PIN. Otherwise a PIN is required. The PIN is confirmed through the bank's servers.

Everyone says that skimming is trivial, and it may be in theory, but I've not seen any real world evidence - though of course that doesn't mean it's not happening. The 'tap' terminals mean you literally have to get the chip close enough to tap the receiver. Perhaps the skimmers have a longer range...but you still have to get pretty close to wallet (not the victim themselves). I suppose if I was worried I'd get one of those special envelopes.

A device that skims magnetic strips can be installed in 15 seconds, and can acquire hundreds or thousands of numbers a day, with the criminal exposing themselves just once or twice. Some with an RFID skimmer needs to be closer enough to their victims to be recognized and identifiable for each and every skimming attempt. Not every attempt will be successful. Since an RFID skimmer needs to be in fairly close proximity to the targeted card, it is hard to automate. A person is probably required. And that still doesn't get you a PIN, so you are limited to small purchases only with a counterfeit card.
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Old Feb 12, 2013, 05:25 PM   #81
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Given this statement, maybe you should pay more attention in your classes?

If you're so interested in inventing the "next big thing", maybe you should take a series of classes in product design, prototyping, and implementation. That might actually give you a better idea of what it takes to take an idea from design to market, rather than asking the members of this forum to do your work for you.

Given your difficulties with math (and apparently engineering), perhaps you should focus on the business side of things... does your school have an undergraduate business program?
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Old Feb 12, 2013, 05:34 PM   #82
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<snip>
Cheers, I could think of a few ways to continue this conversation, but I don't want to get too OT.
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Old Feb 12, 2013, 08:15 PM   #83
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Originally Posted by cambookpro View Post
Come on man...
I'm no expert, but this is simple stuff. RFID is radio frequency identification - hence the RF part.
Yeah, I realize that. What are you getting at?

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Originally Posted by stonyc View Post
Given this statement, maybe you should pay more attention in your classes?

If you're so interested in inventing the "next big thing", maybe you should take a series of classes in product design, prototyping, and implementation. That might actually give you a better idea of what it takes to take an idea from design to market, rather than asking the members of this forum to do your work for you.

Given your difficulties with math (and apparently engineering), perhaps you should focus on the business side of things... does your school have an undergraduate business program?
Yeah, I think so. Nor do I expect you to do the work for me.

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Exactly. Not to mention the fact that if your case is already unibody Aluminum with 360 degree coverage it wouldn't need any additional RFID shielding as it would be a decent Faraday cage. Of course it wouldn't allow any of the wireless features of the phone to work either.

B
So make it conductive instead of a passthrough material with the same feel of the aluminum?
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Old Feb 12, 2013, 08:24 PM   #84
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So make it conductive instead of a passthrough material with the same feel of the aluminum?
Then there is no RFID protection. A faraday cage is pretty much all or nothing.

If you are going to design this thing, you need to understand that stuff - or else you'll get complaints and reviews that signal sucks while using your case.
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Old Feb 12, 2013, 08:29 PM   #85
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Then there is no RFID protection. A faraday cage is pretty much all or nothing.

If you are going to design this thing, you need to understand that stuff - or else you'll get complaints and reviews that signal sucks while using your case.
Keep an opening for the antenna? Apple did something similar.
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Old Feb 12, 2013, 08:34 PM   #86
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Keep an opening for the antenna? Apple did something similar.
I don't have time to teach you RF wave theory, but if you want to design a case with RFID protection for a phone, then you need to learn.
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Old Feb 12, 2013, 08:34 PM   #87
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Keep an opening for the antenna? Apple did something similar.
I don't think you understand how your proposed technology works. Would the antenna work? Sure. But only if you were standing in a certain way and touching a cats tail with one foot in a swamp and three leeches on your right leg. Would it work well? Not at all.

I think you should keep trying things, but you really need to flesh it out. Right now you're just throwing whatever is in the kitchen in the pot and we're telling you it'll taste like garbage. Go do some research.
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Old Feb 12, 2013, 08:39 PM   #88
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I don't think you understand how your proposed technology works. Would the antenna work? Sure. But only if you were standing in a certain way and touching a cats tail with one foot in a swamp and three leeches on your right leg. Would it work well? Not at all.

I think you should keep trying things, but you really need to flesh it out. Right now you're just throwing whatever is in the kitchen in the pot and we're telling you it'll taste like garbage. Go do some research.
"Wireless signals affect radio waves. Radio waves are formed by a variable electromagnetic field. Unfortunately, metal is a conductor of electricity and magnetism, and so it absorbs radio waves. The more metal a building has in its structure, the worse the radio reception is for the people inside."
Aluminum isn't a conductor of electricity nor is it magnetic; the two things that block radio waves. The material I planned on using was the aluminum found in the casing for a MacBook Pro, just to clarify.
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Old Feb 12, 2013, 08:40 PM   #89
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Aluminum isn't a conductor of electricity nor is it magnetic; the two things that block radio waves. The material I planned on using was the aluminum found in the casing for a MacBook Pro, just to clarify.
But you want to put a RFID blocker aro.... you know what. I don't care. I'm unsubscribing from this thread. Good luck on your ideas.
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Old Feb 12, 2013, 08:41 PM   #90
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"Wireless signals affect radio waves. Radio waves are formed by a variable electromagnetic field. Unfortunately, metal is a conductor of electricity and magnetism, and so it absorbs radio waves. The more metal a building has in its structure, the worse the radio reception is for the people inside."
Aluminum isn't a conductor of electricity nor is it magnetic; the two things that block radio waves. The material I planned on using was the aluminum found in the casing for a MacBook Pro, just to clarify.
No, just, no.

BTW, I'm certain I know more about the subject than the ehow contributor you copied that from.

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Old Feb 12, 2013, 08:46 PM   #91
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Why are people here allowing this high school kid to waste their time and energy?
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Old Feb 12, 2013, 08:47 PM   #92
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But you want to put a RFID blocker aro.... you know what. I don't care. I'm unsubscribing from this thread. Good luck on your ideas.
When in doubt, put two things in one device...

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Why are people here allowing this high school kid to waste their time and energy?
College*....
Why did you come here to "waste your time and energy?"
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Old Feb 12, 2013, 08:48 PM   #93
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Squillz buddy, here is a good introduction to E&M. Come back when you've mastered it.
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Old Feb 12, 2013, 08:49 PM   #94
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Aluminum isn't a conductor of electricity nor is it magnetic; the two things that block radio waves. The material I planned on using was the aluminum found in the casing for a MacBook Pro, just to clarify.
You might want to do a basic fact-check on the underlined part. Either google or Wikipedia should give ample informative results.
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Old Feb 12, 2013, 08:57 PM   #95
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Maybe I should start a prototype, 3D printed would be nice... I'll look into it.
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Old Feb 12, 2013, 08:58 PM   #96
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You might want to do a basic fact-check on the underlined part. Either google or Wikipedia should give ample informative results.
e.g. from Wiki: http://en.wikipedia.org/wiki/Aluminum_wire

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Old Feb 12, 2013, 08:59 PM   #97
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"...
Aluminum isn't a conductor of electricity ...
Which is of course why aluminium was used as house wiring for a number of years.

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Old Feb 12, 2013, 09:00 PM   #98
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Why is that when I ran a search on "Waloshin," another member who sounds suspiciously like this Squilly person, I came up with posts and threads from BOTH? Is Silly Squilly actually Waloshin under a different user name? Why is this nonsense allowed to continue?
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Old Feb 12, 2013, 09:04 PM   #99
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Why is that when I ran a search on "Waloshin," another member who sounds suspiciously like this Squilly person, I came up with posts and threads from BOTH? Is Silly Squilly actually Waloshin under a different user name? Why is this nonsense allowed to continue?
Oh Lord. If you think I'm a multi-accounter, you're mistaken. Maybe it's because I've posted on Waloshin's threads or he posted on mine?
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Old Feb 12, 2013, 09:09 PM   #100
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Well, then, as the saying goes, "birds of a feather flock together...."
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