COVID-19 vaccination record / certificates

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BDFL - Memuneh
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#2816031 20-Nov-2021 09:42

When scanned the code will have a cryptographic signature that will ensure it's a valid code. It contains your name, date of birth, certificate expire date. The person doing the scan will then confirm identity with another valid photo id you will present.

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#2816036 20-Nov-2021 10:07

What I don't understand is how the QR code can be scanned when the print area is so small. It is just an indistinguishable blob.

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DS248

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#2816050 20-Nov-2021 10:47

Rikkitic:

What I don't understand is how the QR code can be scanned when the print area is so small. It is just an indistinguishable blob.

@Rikkitic

What are the actual dimensions of your QR code?

Seems odd that it would be an indistinguishable blob?

If you print the pdf you received onto an A4 sheet, the QR code will be 24mm x 24mm, definitely noi an "indistinguishable blob".

Cut out around the dotted lines giving you an 86mm x 105mm piece of paper with all the info you need on it. Folding that down the middle will give you a fairly standard business card size 'card', with the QR code on one side and the shaded part on the other side.

Preferably laminate the folded piece of paper to made it more durable.

davef

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#2816064 20-Nov-2021 11:43

Is it not the case that laminating a QR code print out makes it harder to scan because of the reflective surface? Rather like the problems of scanning QR posters that shops have taped to the back of windows or glass doors.

Rikkitic

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#2816081 20-Nov-2021 12:02

DS248:

Rikkitic:

What I don't understand is how the QR code can be scanned when the print area is so small. It is just an indistinguishable blob.

@Rikkitic

What are the actual dimensions of your QR code?

Seems odd that it would be an indistinguishable blob?

==

If you print the pdf you received onto an A4 sheet, the QR code will be 24mm x 24mm, definitely noi an "indistinguishable blob".

Cut out around the dotted lines giving you an 86mm x 105mm piece of paper with all the info you need on it. Folding that down the middle will give you a fairly standard business card size 'card', with the QR code on one side and the shaded part on the other side.

Preferably laminate the folded piece of paper to made it more durable.

What you say is all true. The code is 24x24mm and the print is sharp, but the result is a fine mesh lattice that I have a hard time believing any scanner could distinguish. I have printed out a larger version just to make sure.

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Kookoo

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#2816112 20-Nov-2021 13:55

DS248:
Covid Tracer App > Dashboard > More Info > My Covid Record > which takes you to mycovidrecord.health.nz > Login > My Health Account

(at 'Login' stage, logged in with My Health Account login in details)

That all takes less than a minute.

Brilliant, that worked! Thanks.

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DS248

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#2816121 20-Nov-2021 14:20

Rikkitic:

DS248:

...

If you print the pdf you received onto an A4 sheet, the QR code will be 24mm x 24mm, definitely noi an "indistinguishable blob".

Cut out around the dotted lines giving you an 86mm x 105mm piece of paper with all the info you need on it. Folding that down the middle will give you a fairly standard business card size 'card', with the QR code on one side and the shaded part on the other side.

Preferably laminate the folded piece of paper to made it more durable.

What you say is all true. The code is 24x24mm and the print is sharp, but the result is a fine mesh lattice that I have a hard time believing any scanner could distinguish. I have printed out a larger version just to make sure.

You may be overthinking it. I have printed the pdf onto both A4 and at A5 paper. Both seem to scan fine with a standard QR code reader. Of course the standard QR code reader does nothing with it - just returns a (very long) set of characters & numbers, starting with NZCP:/1/

DS248

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#2816123 20-Nov-2021 14:22

DS248:

... I have printed the pdf onto both A4 and at A5 paper. Both seem to scan fine with a standard QR code reader. Of course the standard QR code reader does nothing with it - just returns a (very long) set of characters & numbers, starting with NZCP:/1/

Printed onto A5 paper, the QR code is only 16mm x 16mm, but using a decent laser printer it is still quite readable.

Rikkitic

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#2816126 20-Nov-2021 14:33

I just have a regular inkjet. The detail doesn't appear blurry, but it doesn't look very distinct either. I don't have a QR reader so can't check it. If I view the printed bit through a magnifying glass, it looks clear enough, but it doesn't look like the zoomed digital version. There seems to be some stuff missing. Maybe it is better than I realise. I will find out when I try to use it.

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richms

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#2816130 20-Nov-2021 14:50

Rikkitic:

I just have a regular inkjet. The detail doesn't appear blurry, but it doesn't look very distinct either. I don't have a QR reader so can't check it. If I view the printed bit through a magnifying glass, it looks clear enough, but it doesn't look like the zoomed digital version. There seems to be some stuff missing. Maybe it is better than I realise. I will find out when I try to use it.

Did you do it on cheap paper or coated inkjet paper?

Richard rich.ms

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#2816131 20-Nov-2021 14:54

Just regular typing paper. Does this need to come with an instruction manual?

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#2816136 20-Nov-2021 14:57

Rikkitic:

Just regular typing paper. Does this need to come with an instruction manual?

Your printer should have had recommended papers in its manual. If you use the $6 for 500 sheets stuff made for laser printers in it, then the moisture will make anything you print look like a mess with bleeding, non linear colours and other nasty things that would seriously screw up any form of QR or barcode.

Also, if you print it from something that applies an incorrect colourspace conversion to it then it may end up dithering the the thing and making it all grainy on the edges. I know that the ones we printed for people at work on a bog standard office laser printer are able to be scanned no problems in a QR reader on an iphone.

Richard rich.ms

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#2816214 20-Nov-2021 17:09

Like I say, I will find out when I actually have to use it for something. I will be impressed if it works.

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alasta

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#2816221 20-Nov-2021 17:17

I just had a close look at the one that I produced on the laser printer at work a couple of days ago, and the pixels on the QR code are all quite distinct despite being very small. I doubt that a scanner would have any problems reading my printout, but I can see how it would go bad on a inkjet with just a small amount of ink bleed.

tehconz

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#2816223 20-Nov-2021 17:26

I've tested it with the laser printer at work and my basic inkjet. Seems to scan quickly and reliably with either. The main problem with scanning I get with the covid tracer is when they've laminated the paper or put it behind a window and you get reflections.

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