After 2-3 weeks of storing two of my credit cards in my Diamond leather case they have become less readable at the cashier.
A coincidence or can credit cards be affected by being stored too closed to the Diamond. Can a small magnetic pad in the case, which keeps it closed, make cards unreadable?
magnets + electronic devices/items = no.
Why then do a vast number of leather cases have magnets??
This is the one I'm using: http://www.amazon.com/DLO-HipCase-Leather-Folio-touch/dp/B000WOIFO2
(DLO for iPod Touch (it fits)).
Aren't these things tested??
if mobile phone cases use magnets then im sure they would create it in a way that it will not affect the device itself. same for the diamond. Stylus magnet does not affect the device. BUT when you start adding crap that doesnt belong there you will get problems.
The magnetic strip is not used any more. All readers read the chip on the front and in no way can the Diamond affect this.
The case has a credit card slot, so the manufacturer probably expects a credit card to be put in there someday.
I am just wondering whether the combination of a case magnet alongside the heat from the Diamond (I often cycle with it in the case with GPS on) might affect the credit card.
steveianson said:
The magnetic strip is not used any more. All readers read the chip on the front and in no way can the Diamond affect this.
Click to expand...
Click to collapse
Hmm, the strip is used here mostly (netherlands).
I thought this was an urban myth.
We have a magnet on the side of the phone.
And various puches and wallets carry magnets.
Dont know im
Greetings
The main problem is the electromagnetic filed created by the GSM part of the phone. It's simple : do not store a GSM with a credit card or other things that use magnetic fields.
steveianson said:
The magnetic strip is not used any more. All readers read the chip on the front and in no way can the Diamond affect this.
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Click to collapse
Not on my card, still uses the magnetic info.
lpaso said:
The main problem is the electromagnetic filed created by the GSM part of the phone. It's simple : do not store a GSM with a credit card or other things that use magnetic fields.
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Click to collapse
25 points! this is the correct answer. not the tinny magnet for the stylus, not the weak magnet of the case.....the very strong and harmful (even for yr health) electromagnetic radiation generated and received by yr phone even when you are not in a call. try not to use yr phone when in an elevator, car (without antenna) or any confined or open space with bad reception.
bad reception=high level of electromagnetic radiation.
an interesting fact: the only mobile phone that was designed to lower the quantity of electromagnetic radiation we absorb (very bad for our health) was Motorola V3. why? because its antenna was in the lower part (your chin) and not on the upper part (yr ear and brain).
if you put the a phone next to a speaker and call the phone you can make the speaker go nuts with the magnetic field generated by the phone, so wouldnt supprise me if can screw up a credit card being so close to the phone.
But i do remember a mythbuster episode on wiping a credit card with magnets can be done with rare earth magnets maybe they should try again with a mobile.
This is a copy-paste from page 12 of the manual PDF:
"
Please avoid putting any media that contains magnets,
e.g. magnetic card, credit cards, bank cards, audio/
video tape or magnetic memory devices, directly on
the device or stylus without any distance.
It is highly recommended to put the media containing
magnets in a security distance of at least 5 cm. If you
carry your wallet or billfold which contains magnetic
cards next to the device or its stylus, information
stored on these cards could be destroyed.
Please make sure that there is an adequate distance between
the device or its stylus and other magnetic sensitive devices,
e.g., a mechanical watch or measure instruments.
"
In Gothenburg some of the cards that you use for the public transport system contains a magnetic strip and the stip is so sensitive that it is enough to have the card next to a credit card to destroy it. So magnetic strips sucks because they are very sensitive to magnetism of any kind.
laika424 said:
In Gothenburg some of the cards that you use for the public transport system contains a magnetic strip and the stip is so sensitive that it is enough to have the card next to a credit card to destroy it. So magnetic strips sucks because they are very sensitive to magnetism of any kind.
Click to expand...
Click to collapse
the answers in this thread do not all agree with one answer. which mean some people are expressing opinions and not facts.
the level of magnetism required to affect a credit card is quite large and usually only achievable with powerfully electro magnets.
neither the magnets nor the radio in the diamond produce a strong enough field to effect your credit card so you can now sleep worry free knowing your card is not being harmed
The size of a magnet required to wipe/rearrange the electromagnetic field on a MagStrip is only the size of a penny or a 5 pence piece.
You talk of a slot 'designed' for credit cards, does it specifically say 'credit card here' on it? These companies produce enough of these devices to know that a cellular signal/broadcast is more than enough to wipe the information of the ancient MagStrip. The magnetic and sonar equipment used in aircraft is also similarly affected.
Someone also said of how most places use 'Chip & PIN' now. Although this is true, the chip only stores PIN information and a majority of retailers pinpads have magnetic readers to read the account details.
Maybe now, you'll think about how you play around with magnets.
Not sure..
About the diamond, but I can say for relative certainty that my X7501 will kill a hotel room key in seconds flat, the magstripe kind that is... (works really well when you get your phone near that one annoying jerk holding you up at the front desk while yelling about the soap placement in the shower...)...
-Will
7501 Advantage - death by my saturn...
excalibur - death by my saturn...
*ordered* Diamond - will never be plugged in to my saturn.....
hooty said:
About the diamond, but I can say for relative certainty that my X7501 will kill a hotel room key in seconds flat, the magstripe kind that is... (works really well when you get your phone near that one annoying jerk holding you up at the front desk while yelling about the soap placement in the shower...)...
-Will
Click to expand...
Click to collapse
i cant speak for one particular hotel room key but in general it takes over 3000 Gauss magnetic field to affect a modern credit card just by exposure and about 1400 gauss magnet if you repeatedly swipe the card accross the field.
you can buy neodymium magnets this powerfull and they are actually rather small for the strength they posses, but the field generated by these are far in excess of anything produced by the diamond.
After reading the thread I'm as confused as ever
Can a small magnet(about a pinhead in diameter) and a GSM phone destroy the magnetic strip of a credit card?
its really simple. for a more specific and rock answer
1) google for a result about cell phones + credit cards
or
2) dont do it again and save yourself some hassle
or
3) do a test and repeat it again and find out for yourself
Related
Hi all,
I am planning to modify an existing handsfree set for use with my XDA and during planning I found:
http://www.cheap.de/shop/pd1044621724.htm?categoryId=8
On this page you will see the following line:
Anschlussmöglichkeit für externe Antenne
Click to expand...
Click to collapse
For those that can't understand German: Can support external antenna
How do they do this? I have not found any reference of a connector for an external antenna.
Regards Robert
6 foot tall ape descendant
external antenna
:x :x bummer, this was posted by me but I wasn't logged in :x :x
Climber, Robert
6 foot tall ape descendant
It probably uses a passive coupler. If you place a properly-designed coil very close to the phone antenna it will couple RF effectively.
Your right!
Got the car kit yesterday. Opened the cradle and found a large piece of PCB that is positioned close to the antenna of the XDA. This PCB is connected to the lead that comes from the external antenna.
Francois
Yeah, a passive coupler. Makes sense. It should give you a 3-5dB boost, good enough to clean up conversations in fringe areas.
external Antenna
Sorry,
whats PCB???
Can U make a Photo?
Stevie
PCB = Printed Circuit Board.
A foto would be overkill, just imagine a piece of epoxy 5*5 centimeters, covered with copper.
Francois
Hello FVH,
would be nice to hear your experiences with the car-kit.
Does radio mute work ?
Does the sound work through the radio speakers ?
What is in the box of the car-kit ?
Is it worth the money ?
Thanks :lol:
FVH,
Re the PCB description, is it just as you say "a flat piece of copper" without a pcb design on it, if it does what does it look like... are there any other components on it?
e.g. can we make one up easily!
using sticky back plastic or veroboard - e.g. Blue Peter with a bit of Maplin thrown in to achieve a better xda signal...
So if this thing really is just a flat plate, and has no intrinsic components, pcb tracks or special properties...does it that mean we could just rig up a sheet of tinfoil or other conductive item nearby...
I guess we need a Radio Ham with an xda to tell us we're onto a lost cause - Hopefully owning an xda is not like the early days of broadband, where you have to base your homebuying/renting on where you can get a service!
Or someone who's tried out the inductive antenna as mentioned on the other thread http://www.xda-developers.com/forum...=0&postdays=0&postorder=asc&highlight=antenna
http://www.expansys.us/product.asp?code=AXF-15S
You can make a perfectly tuned antenna/pickup out of just copper etching on a piece of PCB. Unfortunately, it is infinitely easier to create a distuned antenna from the same components.
After a lot of research it seems the "as seen on TV" signal booster widgets (small PCBs) as suspected dont work.
http://www.bettercalls.com/
http://cellphones-accessories.com/cell-accessories/celphonpow24.html
This is a brilliant site where I found all the info:
http://www.criterioncellular.com/html/reception.html
Whats needed is either:
1) someone making a replacement antenna - as from the internal images shown on this website, it seems fairly easy to remove when dismantling the xda. Why not have a replacement one with an external FME antenna connector. This could then be attached to a small car type antenna.
http://www.tdc.co.uk/antennas/antenna_gsm.htm
apologies if my theories are a little optimistic on this... its just an idea.
2) Purchase of an external signal booster, which can be attached to a small antenna. Then directly plugged into a modified antenna (as 1 above)
3) A seperate re-radiator to boost the outdoor GSM signal inside the home, although this seems expensive! ($279)http://www.criterioncellular.com/html/cellular-amplifier-bda.html
4) as carlos suggested an inductive repeater, you can buy these for GPS systems, why not for GSM signals?http://www.expansys.com/product.asp?code=GPSW-RRAD-45
FVH - Have you noticed any difference with signal using the inductive coupler?
:wink: [/b]
Does anyone else have problems with screwing the additional battery to the back of the XDA? I find that finger tight is not tight enough and the grooves in the screws are not deep enough for a screwdriver. If a screwdriver is used it scratches them! Can those screw thibgs be replace with something half decent? Thanks
loose screws
Had the same problem, make sure the xda is face in your hand and press firmly down where the are screws are focusing pressure between the screws take are very small screwdriver the kind you get in a computer toolkit and very gently take up the slack DO NOT PRESS DOWN & TIGHTEN LIKE A MANIAC, if its still loose focus the pressure closer to the 1 screw, take up the slack as above, then repeat on other.
REMEMBER! BE CAREFULL NOT TO GO HEAVY... the threads on these units are delicate.
Where can I find a cheap extended battery on the net?
You have 2 cheating choices.. you could take your chances on ebay or really cheat and contact expansys they have a 9v battery adaptor for the xda thats about £14 excluding VAT and price is at the time of this reply (great for emergencies and when your case doesn't have room for the extended battery)
Failing that, brand new from www.expansys.com is £46 I've noticed the pricing of them keeps falling plus I'm sure the net companies are cheaper. :twisted:
The expansys one seems to be a different colour to the o2 uk xda, being a slightly more "grey colouration" than the silver of the machine itself.
Perhaps its just the one I've got.
I've noticed that the xda battery on O2's website now seems to be set at a similar price as the expansys one - perhaps that one's a "better match"
not that I'm picky!
The only other issue is its difficult to find a case that will accomodate the battery, the standard "captin kirk" xda leather case wont close properly with it fitted, neither will the innopocket alluminium one.
Case accomodating ext. battery
If you want a case that comfortably accomodates the ext. battery go for the case dixons sells for £10 - Its the only case they sell for the xda, the downside being there is no beltclip whatsoever, great for my handbag, don't no bout the guything- its looks very much like an executive case with room for creditcards ext.battery and an extra stylus slot.
Do I get the award for the simplest mount?
Basically what I've done here is take the self-adhesive metal plate tomtom supply for securing their gps 'mice' to the car. It holds my Advantage just beautifully. I thought it might swing around a bit on its axis because the plate is so small but if you sit the end of the advantage that has two magnets (either side of the keyboard connector) it seems to hold in place pretty rigidly. I've tried a few twists and turns as well as emergency stops and not lost it yet. It might be the case that the screen would flop off the keyboard at a very rapid deceleration but it hasn't happened yet. I leave the cover on for convenience and to cushion its fall if that does happen.
So far it seems pretty secure but use at your own risk.
Cost approx GBP£5 (USD$10) plus tax, postage etc and ultimate convenience. No sucker bases, swing arms etc and it sits right where its needed for power etc.
I had mine left over from a previous tomtom installation but similar plates are apparently still available as spares e.g. from here.
I'm not sure mine is magnetic, by the way, it may just be metal.
The same I thought...but I sold TomTom gps years ago...
inframan said:
Do I get the award for the simplest mount?
Basically what I've done here is take the self-adhesive metal plate tomtom supply for securing their gps 'mice' to the car. It holds my Advantage just beautifully. I thought it might swing around a bit on its axis because the plate is so small but if you sit the end of the advantage that has two magnets (either side of the keyboard connector) it seems to hold in place pretty rigidly. I've tried a few twists and turns as well as emergency stops and not lost it yet. It might be the case that the screen would flop off the keyboard at a very rapid deceleration but it hasn't happened yet. I leave the cover on for convenience and to cushion its fall if that does happen.
So far it seems pretty secure but use at your own risk.
Cost approx GBP£5 (USD$10) plus tax, postage etc and ultimate convenience. No sucker bases, swing arms etc and it sits right where its needed for power etc.
I had mine left over from a previous tomtom installation but similar plates are apparently still available as spares e.g. from here.
I'm not sure mine is magnetic, by the way, it may just be metal.
Click to expand...
Click to collapse
Great idea. So in theory, any magnetic adhesive strip should serve in the car. Hmmm....
Maybe these
http://cgi.ebay.co.uk/Magnetic-Stri...yZ123866QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Or cheaper ones!
inframan said:
Do I get the award for the simplest mount?
Basically what I've done here is take the self-adhesive metal plate tomtom supply for securing their gps 'mice' to the car. It holds my Advantage just beautifully. I thought it might swing around a bit on its axis because the plate is so small but if you sit the end of the advantage that has two magnets (either side of the keyboard connector) it seems to hold in place pretty rigidly. I've tried a few twists and turns as well as emergency stops and not lost it yet. It might be the case that the screen would flop off the keyboard at a very rapid deceleration but it hasn't happened yet. I leave the cover on for convenience and to cushion its fall if that does happen.
So far it seems pretty secure but use at your own risk.
Cost approx GBP£5 (USD$10) plus tax, postage etc and ultimate convenience. No sucker bases, swing arms etc and it sits right where its needed for power etc.
I had mine left over from a previous tomtom installation but similar plates are apparently still available as spares e.g. from here.
I'm not sure mine is magnetic, by the way, it may just be metal.
Click to expand...
Click to collapse
This is great! Can't believe I didn't think of it. DUH! Great job on reporting this.
I'm thinking of going to the hardware store and getting a small L shaped metal "plate" and put velcro on the back of it. Should hold things nicely.
Like the way you kept the case on it. I would have done exactly the same thing. Not only does it help but I would be too lazy to remove it all the time when I got into my vehicle.
magnetic adhesive strip
Actually I tried magnetic adhesive strip, but it is quite weak ... Found out a normal metal ruler is better magnetic adhesive, as the keyboard is quite a strong magnet
@topic
Its really a good idea... I might try it...
Im using this one
it's fantastic and very solid
I've got a GoKart golf trolley and I have a Golf GPS program for my HD2, so firstly I need to find a holder for the phone but the question I have for you chaps is,
As I'm running Android on my HD2 and this eats batteries - can any of you recommend a good portable charger that works for the HD2? I'm thinking one of those battery packs that has a usb connetion - then I just plug in my standard lead......I may look to see if I can wire up a usb socket from the carts battery via a cig lighter type setup.
The reason why I think I need one is that a round of golf can be 4 hours long and I'd need to have the screen set to full brightness and always on so I can easily see the golf program.
any help would be great
cheers
As you're using a cigarette lighter would a generic car charger do?
Sorry to flag this up after so long.
Do you really need to see the program all the time? I use GolfGPS when im playing and have the screen turned off except when im stood over the ball ready to take a shot and need to know the yardage. Turning the screen off when not needed will save you loads of battery. My HD2 easily gets round a course with 50% or so to spare on battery life. I think GPS can be set to run in the background but even if not, it doesnt take more than a few seconds usually to figure out where you are!
As for holders, i dont know if you sorted it but have a look at http://www.pdahut.com/herbert-richter-holders-and-mounts/ , id imagine the bike handlebar one would probably fit onto a golfcart resonably well!
This site also has a good collection of bike mounts that may well be compatible with Golf cart. Holders and Mounts
Bike Mount from Ebay
Esspee_London said:
This site also has a good collection of bike mounts that may well be compatible with Golf cart. Holders and Mounts
Click to expand...
Click to collapse
I have bought this bicycle mount from ebay and wanted to share my overall positive opinion on it. It is quite cheap, 3,77$ including shipping to Taiwan, but well built, durable and functional nevertheless. It truly is designed especially for HD2.
Pros:
*really universal(up to 1 inch), it was easy to mount and dismount,. no hassle.
*Sturdy fixation on the steering bar.
*360 degree swirling ball-head joint, very easy to tilt.
* not covering any important part of the phone.
* the holder is cushioned wherever touches the plastic of Phone to reduce possible wearing. inserts.
Cons:
* Was rather hard to pull the phone off the mount,the battery cover tended to come off too. But i guess it is reasonable, otherwise the phone would snap off on every bump and jump. I just think that there might be another fixation mechanism, that could be both reliable and easy-releasing..
* no instruction or manual on how to mount/use the holder.
* it is even harder to pull the holder out from the fixed part. I imagine there would be cases when one would try to briefly release the phone out of holder (to make a call for instance) and put it back. Well, with current design it is rather hard. Me maybe I am doing something wrong. Or some parts need to work a couple of times back and forth until they get to the necessary usable condition? I will see..
* The plastic phone holder has a hole for camera, but i would rather prefer if it would have another hole for the LED light, to use it as an emergency blinking light in cases my bike light is damaged/dead.
Conclusion: I recommend - very handy accessory for frequent bikers, but more suitable for outdoor "sunny" biking, where one would not need to take the phone out and back frequently.
P.S. If there was a nice and cheap waterproof case (to drive in rain) i would have gone for it, but couldn't find any, so ended up with this
hey everyone ,
i have a very curious question , why many and many aren't cover the magnetic pins and let it exposed , it's rare to find a cover that covers this area as well
so why is that ? is it because it will weaken the magnetic or something or just a random no reason for that ?
thanks in advance
I've wondered the same thing. Since the Mods require physical connection to the pins, and a case will add thickness to the back, preventing them from touching, it makes no sense to me for the pins to be exposed. Especially when they run the risk of being damaged.
But then, why do so many iPhone cases have a cutout for the Apple? Probably just to show off.
klamation said:
I've wondered the same thing. Since the Mods require physical connection to the pins, and a case will add thickness to the back, preventing them from touching, it makes no sense to me for the pins to be exposed. Especially when they run the risk of being damaged.
But then, why do so many iPhone cases have a cutout for the Apple? Probably just to show off.
Click to expand...
Click to collapse
If it was to Show off with pins this will be weird ???
I would assume they did it solely because they didn't want to cover any connection and not because they understood that it would be better if they covered it to protect the mods. Probably got a specification and just did something similar to what they do with other devices and leave connectors uncovered.
I think this is probably the correct answer. Pretty much all cases available at launch were like this. I'm sure Lenovo just sent out a CAD file to manufacturers but didn't want to give away how Mods actually work, so case designers just generated a cut-out in their CAD file like they usually do without putting any additional thought to it (or thought about it hard, but had to have a product ready for distribution and couldn't afford to hold it back for an explanation).
I've heard somewhere that it was for the pins to release their heat after using a mod for a long period.
Maybe some manufacturer or even Lenovo would make a passthrough adapter for Moto mods,hence the pins are left uncovered.
Then again not likely as thickness and clearance would still be a problem as most cases and covers aren't uniform.Would still be cool though
My two cents here.
Seems like if they cover them and some foreign material got behind the case and the pins, it could short out the pins and potentially cause all kinds of issues. Worst being melting the case or starting a fire. That's my guess