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Qr Codes Do They Divulge Any Personal Information?

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Pillar Of The Community
Netherlands
3004 Posts
Posted 02/08/2023   07:32 am  Show Profile Bookmark this reply Add NSK to your friends list  Get a Link to this Reply
On a technical note: the two-dimensional barcode attached to stamps by postal some postal authorities, technically, are not QR-codes.
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Valued Member
Denmark
59 Posts
Posted 02/08/2023   07:34 am  Show Profile Bookmark this reply Add Viking123 to your friends list  Get a Link to this Reply
@NSK

I receivede letters with an Attached QR code, it it not a barcode.
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Valued Member
Denmark
59 Posts
Posted 02/08/2023   07:46 am  Show Profile Bookmark this reply Add Viking123 to your friends list  Get a Link to this Reply
@NSK

This letter is with a datamatrix I receivede letters with the QR code also, but have not savede any I think the ones with QR- code might hold company information as you can sign up and use QR codes to use in your company.

Letter with a datamatrix



QR Code and Barcode



I think there is more codes.
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Edited by Viking123 - 02/08/2023 08:15 am
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United States
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Posted 02/08/2023   07:52 am  Show Profile Check 51studebaker's eBay Listings Bookmark this reply Add 51studebaker to your friends list  Get a Link to this Reply
Viking,
When I scan your bar code it came back with this;

0210324074136;8900;332800;8560201305;89590861;8560;497;773;572;3221;;

Don
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Valued Member
Denmark
59 Posts
Posted 02/08/2023   07:56 am  Show Profile Bookmark this reply Add Viking123 to your friends list  Get a Link to this Reply
@Don

I do not know what the barcode have of information, But I know that 8560 is the postal code for my area I bought some stamps in Sweden.

Did you try the QR-Code?

A little more information of different types of codes.


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Edited by Viking123 - 02/08/2023 08:20 am
Pillar Of The Community
Netherlands
3004 Posts
Posted 02/08/2023   08:30 am  Show Profile Bookmark this reply Add NSK to your friends list  Get a Link to this Reply

Quote:
I receivede letters with an Attached QR code, it it not a barcode.


What you show is an item of mail with and affixed label carrying a code. That is not a QR-code. Your other examples are. Hint: the corners of the code area and not the dimensions make a difference when it comes to QR-codes.

What I wrote was a two-dimensional barcode attached to stamps:


Quote:
two-dimensional barcode attached to stamps by postal some postal authorities, technically, are not QR-codes


I am not sure which rod222 referred to. But below is a recent (well 7 years old already) development. This is not a QR-code. A number of European countries use these barcodes (France, Germany, GB).


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Edited by NSK - 02/08/2023 08:37 am
Pillar Of The Community
Netherlands
3004 Posts
Posted 02/08/2023   08:56 am  Show Profile Bookmark this reply Add NSK to your friends list  Get a Link to this Reply
@Don,

You refer to a 'barcode.' I am not sure which you refer to.
The QR-code for the 20 Ore Red Viking123 posted on page 1 directs me to this image:

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Valued Member
Denmark
59 Posts
Posted 02/08/2023   09:01 am  Show Profile Bookmark this reply Add Viking123 to your friends list  Get a Link to this Reply
@NSK

It looks like the Datamatrix code.

Seems like there can be different use of the codes. Read about the QR-Code the Canadian postal service made a survie and attached a QR-code to letters.

Found this:

"What is a Data Matrix code used for?

Data matrix codes are used extensively to label small electronic and industrial components, but they are also used widely in many different industries, including food and beverage, aerospace, pharmaceutical, defense, mail, and print media because tracking and traceability are critical in these industries
"
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Valued Member
Denmark
59 Posts
Posted 02/08/2023   09:07 am  Show Profile Bookmark this reply Add Viking123 to your friends list  Get a Link to this Reply
@NSK

The picture from the QR-Code is the 20 Ýre Red position 100, known by the red line unde RE. The QR-Code is good to use if you have a large file a Sheet of 100 stamps and you want to keep the details.

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Netherlands
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Posted 02/08/2023   09:12 am  Show Profile Bookmark this reply Add NSK to your friends list  Get a Link to this Reply

Quote:
It looks like the Datamatrix code.


That is the correct name, indeed. Post offices use these to keep track of the status of the stamp. Once scanned, the code is deleted from the list of available stamps. In theory, this should prevent the reuse of stamps that have no cancellation mark and identify forged stamps. At the same time, it allows attaching information such as destination to the mail item.

Some people on this site consider that if the postal authorities do not apply a cancellation mark, they are telling them they may use the stamp again.


Quote:
The QR-Code is good to use if you have a large file a Sheet of 100 stamps and you want to keep the details.


Nice use of technology.
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Edited by NSK - 02/08/2023 09:14 am
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Posted 02/08/2023   09:23 am  Show Profile Check 51studebaker's eBay Listings Bookmark this reply Add 51studebaker to your friends list  Get a Link to this Reply
NSK,
The bar code that I scanned was this one;


I agree that the barcode that Rod showed decodes to the jpg image you show.

FYI,
During my career, I was project leader for a number of barcode scanner development projects with Symbol Technologies and Motorola. I scanned this code with one of the scanners we developed and built in our facility. I am familiar with the scanner technology, barcode technology, and the firmware which decodes the barcodes.
Don
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Pillar Of The Community
Netherlands
3004 Posts
Posted 02/08/2023   09:25 am  Show Profile Bookmark this reply Add NSK to your friends list  Get a Link to this Reply
I wondered whether you referred to that one.

My Samsung S10 does nothing with that barcode.
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Valued Member
Denmark
59 Posts
Posted 02/08/2023   09:25 am  Show Profile Bookmark this reply Add Viking123 to your friends list  Get a Link to this Reply
@NSK

It has been a great day, I learned something new about a subject that I never thought of.

Cleaver way to use the datamatrix by the mail, nice item you showede with QE II
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Posted 02/08/2023   09:31 am  Show Profile Check 51studebaker's eBay Listings Bookmark this reply Add 51studebaker to your friends list  Get a Link to this Reply
The firmware in the scanner I used can decode 23 different bar codes types, it also omnidirectional and can decode a barcode in any orientation (which was new tech back when we did this about 20 years ago...LOL).


This is a tiny USB scanner, about 2.5 inches long.
Don
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Denmark
59 Posts
Posted 02/08/2023   09:38 am  Show Profile Bookmark this reply Add Viking123 to your friends list  Get a Link to this Reply
@51Studerbaker

Nice device 20 years ago, scanners probably use the same technology today, the QR-code I think dates back to 1994.
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