Martin Brown brought next idea :
I have tried it in shops (plus other tests) and yes it does prevent it working. The coffee foil I used does not allow light through, I suspect that is its main purpose, to prevent light spoiling the coffee grounds.
Martin Brown brought next idea :
The slot type reader uses a magnetic reader, like a cassette tape. The contact less card uses RF via an embedded chip.
Martin Brown explained :
True, but they are also quite heavy. All you are trying to do is foil a low power attempt to skim a card in your pocket - which is difficult even if you cooperate with the process.
on 17/01/2018, Jethro_uk supposed :
I have seen some driving without the light covers - is that (normally) to prevent theft of the covers, or the vehicle.
You shouldn't rely on two cards being next to each other to give assurance that neither of them can be read. It is perfectly possible to identify two or more cards, and then speak to them individually, so if the till wanted to, it could ask "Do you want to pay on your Barclays card or your Santander card?", or a hacker could take details of both cards.
It happens, I had one cover stolen from a car, parked outside the house, many years ago. Now they tend to have the screws on the inside.
It happens that Andy Burns formulated :
Thanks, I didn't know that - when there are multiple cards, I have always been told they cannot read the card.
It says that, because it doesn't want to bother reading multiple cards.
My point was that it could read dozens of cards if it wanted to, but then it would have to get you to pick on screen which one you intended to pay with.
I'm told that in a similar situation Oyster readers just 'randomly' pick one card, rather than refusing to read any of them, which could lead to you not getting the proper discounts.
no matter what they tried, the screws on FIATs always rusted (even the plastic one :). So they came up with a clip on design which was easy to steal (like wheelie bins, it only takes one theft, and you have a circle- spate of "acquisitions")
This has been discussed at length elsewhere in the last month or six weeks and the discussion included links to the precification for NFC/RFID cards and protocols but I've just spent over an hour searching everywhere I can possibly think of but not found where it was.
Sorry, I tried!
Perhaps you might like to try yourself.
Would seem fairy logical to me that if you want to use your card of choice you'd swipe that? In much the same way as you'd choose the credit card you wanted to use in a shop?
Just swiping your wallet with several cards in it would be an odd thing to do.
There's a lot of odd people about. The trouble with cards is conflict but t his doesn't happen if you use a wallet that is in your phone or rather the software version of a wallet. My tesco card seems to be the worst offender I can't keep my tesco reward card in the same plastic thing as my oyster ca rd as the oyster machines won't work, but it seems OK with my sainsbury car d. I only have 4 cards no CC, a DD card, some seem to need mutiple cards I don 't feel that need so far.
My RFID tesco card stays at home ... the barcode version still works.
TfL fares are capped in various ways and Oyster, or a credit/debit card used in lieu, always gives the most beneficial fare.
As an example, using buses only, the daily fare is capped after the third journey of the day and all subsequent trips up until 0330 the following morning are not charged for.
If you have a number of cards in the same wallet, though, the Oyster reader might read them at random on different journeys so, say you have three NFC cards and you are using them a lot, you could open three separate accounts but not hit the cap on any of them, possibly, until the 10th journey.
Not really. Being (well) over 60, I've had a freedom pass for
13 years now. When NFC was introduced, it was obviouly simpler and faster to just wave my wallet over the reader - no fumbling with gloves on freezing cold days, for example, and impossible to drop the card by accident.When TfL extended the Oyster system to include NFC bank cards I had to break this habit and, in fact, kept it in a separate holder - not my wallet.
Now I've moved away from London, I have to do that anyway because the reader is horizontal and accessed through a hole in the driver's vandal proof screen rather than London's unobstructed vertical readers.
Isn't there the added rub that TfL regs say you must touch out with the card you touched in with ?
whisky-dave has brought this to us :
You obviously carry around a lot of CASH instead. I carry around several cards, for those rare occasions when a particular one might not work for what ever reason. I have never suffered such a failure, but I am prepared.
The credit/debit card can, in certain circumstances, not give you such a good deal.
If you have a railcard, you can get it linked to the Oyster card. Then you get railcard discounts. You can't do that with a credit/debitv card.
Not quite sure why you'd need to carry around loads of cash or cards at all? Do you make many large purchases on impulse?
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