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QR Codes on Tickets

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Belperpete

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I recently purchased a ticket from the booking office at Euston that was a standard card ticket with magnetic stripe on the back, but it also has a QR code printed on the front (lower-right, just above the lower orange stripe) in addition to the usual info. This is the first time I have seen a card ticket with a QR code. Is this going to become standard?

The size of the QR code is much smaller than on one of the newer paper-roll tickets. I was led to believe that the paper-roll tickets are the unwieldy size they are because the QR code needed to be that big. Why can't paper-roll tickets have the same-size QR code as the card tickets? Making the paper-roll tickets smaller would save paper, and mean less folding to get them to fit in a card/pass holder, etc.
 
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Haywain

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The barcode on the paper roll tickets contains more information than that on a CCST ticket, that's why it is bigger.
 

tom73

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Is this the real reason? After all an iPad with 128GB storage is the same physical size as one with only 64GB storage. How much more information does the code on a paper roll ticket need, a ticket that is not intended to operate ticket gates.
 

James H

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The code on the bog roll tickets will operate gates at stations with the appropriate readers
 

hkstudent

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I doubt that's the reason.
I think the size of the paper roll ticket printer is larger, it prints out a larger ticket

QR code is not essentially to be larger to contain more details. the fineness of the icon matters.
 

swt_passenger

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Credit card tickets with QR codes on the front, (or are they Aztec codes?), have been around for about four years. I already thought it was supposed to be a National standard...
 

Haywain

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OK, so the size of the barcode may not be relevant, but one does contain more information than the other.
 

alistairlees

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There are no QR codes on National Rail tickets (except one Merseyrail one!). They are Aztec codes.
 

krus_aragon

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Is this the real reason? After all an iPad with 128GB storage is the same physical size as one with only 64GB storage. How much more information does the code on a paper roll ticket need, a ticket that is not intended to operate ticket gates.
The bit of the Ipad that stores the data is very small compared to the Ipad itself. A chip whose size is similar to an SD card, or smaller. Moore's Law aside, the option will be between using one 64GB chip or two 64GB chips side by side. But you wouldn't notice the difference once the case is on.

I doubt that's the reason.
I think the size of the paper roll ticket printer is larger, it prints out a larger ticket

QR code is not essentially to be larger to contain more details. the fineness of the icon matters.
You may still be limited by the resolution of the printer that issued the ticket, and that of the scanner used to read the QR/Aztec/whatever barcode. If these are limiting factors, then the only option is to print bigger.
 

Wallsendmag

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The barcodes are CCST tickets are type 11 and carry very little data. On Self print, e-Tickets, M-Tickets and PRT they are type 6 and carry far more data. GNER,NXEC,EC,VTEC and now LNER have had barcodes on CCST tickets.
 

JonathanH

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If you present a credit card sized ticket with a printed code at the barriers at Leeds, a message appears telling you to put them through the barrier in the normal (magnetic) way, presumably so it "swallows" it.
 

JonathanH

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There can't be less information than that contained on the magnetic strip?
 
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