How to check whether the page is writable on a Mifare Ultralight tag?
Following the example
NFC TagInfo
NFC Research Lab
The menu "Access Conditions"
Page1..Page15
read-only/writable(factory locked/locked)/reserved/lock bits
Consult the MIFARE Ultralight datasheet, available at http://www.nxp.com/documents/data_sheet/MF0ICU1.pdf
The bits of the 2 lock bytes in page 0x02 determine which page can be written, see page 12 of the linked datasheet above.
Related
I have an nfc card type Tag : ISO 14443-3A that I usually use to open door and I would like to convert as a business card because of the graphic.
I try some applications (iPhone) but I can’t format and I can’t insert the contacts.
Any one knows how can be fixed?
Many thanks in advance and be patient with my English 🙏🏻
Some applications for iPhone and my intent is to Format and convert as a business card my nfc card
I would like to change the font-size and the font-type of the text in the Alexa card?
But I don't know if this is possible.
I would like your help,
Thanks.
You cannot change font-size and font-type of Alexa Card.
However, you can include an image with a Standard card.
These are the different kinds of cards available.
A Simple card displays plain text. You provide text for the card title and content.
A Standard card also displays plain text, but can include an image. You provide the text for the title and content, and the URL for the image to display.
A LinkAccount card is a special card type only used with account linking. This card lets users start the account linking process.
A Permissions Card can be used to ask customers for their consent to use resources such as address, postal code etc.
More on cards here
Best practices for card design here
I have acquired an Epson thermal printer (TM-T82II) with a control utility (APD5) that allows me to configure and test the printer. I use the utility to (try to) print barcodes, but cannot find any documentation on how to make use of the Code128 support I need.
I want to print out a Code 128 barcode for "PQR123X1122331807110011223344". I seem to be able to do this by specifying a test string of "{APQR123X1122331807110011223344" to encode the string in Font A, and likewise use "{BPQR123X1122331807110011223344" to encode it entirely in Font B. Both generate barcodes too wide for the paper I have. However, there is a large run of digits after the "X" which is more efficiently encoded in Font C and that I know will fit (I have an example from another printer). The obvious thing of using "{APQR123X{C1122331807110011223344" produces garbage.
Can anyone point to documentation that unravels how Epson do font-switching in Code 128?
#Omatai,
Epson's ESC/POS printer language does not use fonts for rendering barcodes. If you are directly sending escape codes to the Epson printer, GS w is the command to set the barcode width in ESC/POS, where w is a number between from 2 (thinnest) to 6 (thickest) which specifies the width of the barcode's minimum element. The actual measurement is dependent on the model of the Epson printer.
Epson ESC/POS Documentation: https://reference.epson-biz.com/modules/ref_escpos/index.php?content_id=2
To help you further, this group would need to know more about the programming model that you are using and the associated code that you are attempting to use.
Terry Warwick, Microsoft
When i type 1960 characters in CKEditor and submit the form, my controller is getting around 2000 characters. I have checked through the data but still cant find out the exact reason why it is going like that
Length of data in UI : 1978
Length of data in Controller : 1991
so, additional 13 characters are added.
The data i am sending in UI is as follows --------------------------------------
Some older driver versions allowed you to select the “letter” size and adjust the margins to define the ticket size. This feature is still available in the new drivers to support old installations. When selecting a new font, Windows will default to the previous font size. This size will usually be incorrect. You must re-assign a valid font size to guarantee the proper font representation on your screen. "Tall" font in Word Pad does not display properly on the screen. Driver Use – Word Only (PCL and FGL) Before using Word, you must select the “use printer metrics to layout document” box in tools/options/compatibility. All of the previous “driver use” guidelines apply to Word. Word also provides you with the unique ability to define a custom page size within the application itself. We strongly recommend against the use of this feature. However, the following description will explain the use and limitations of this feature. While Word allows you to manipulate the page size in both portrait and landscape modes, the data sent to the printer only functions properly in portrait mode. You cannot print in landscape mode with a Word defined custom page size. In portrait mode, you can manually set the height for any ticket length up to 11 inches. For ticket lengths greater than 11 inches, you will need to add your own page size as described above in the “all applications” section. lengths greater than 11 inches, you will need to add your own page size as described above in the “all applications” section. lengths greater than 11 inches, you will need to add your own page size as described above in the “all applications” section. lengths greater than **
The data im receiving in controller is as follows --------------------------------------
Some older driver versions allowed you to select the “letter” size and adjust the margins to define the ticket size. This feature is still available in the new drivers to support old installations.
When selecting a new font, Windows will default to the previous font size. This size will usually be incorrect. You must re-assign a valid font size to guarantee the proper font representation on your screen. "Tall" font in Word Pad does not display properly on the screen.
Driver Use – Word Only (PCL and FGL)
Before using Word, you must select the “use printer metrics to layout document” box in tools/options/compatibility. All of the previous “driver use” guidelines apply to Word. Word also provides you with the unique ability to define a custom page size within the application itself. We strongly recommend against the use of this feature. However, the following description will explain the use and limitations of this feature.
While Word allows you to manipulate the page size in both portrait and landscape modes, the data sent to the printer only functions properly in portrait mode. You cannot print in landscape mode with a Word defined custom page size.
In portrait mode, you can manually set the height for any ticket length up to 11 inches. For ticket lengths greater than 11 inches, you will need to add your own page size as described above in the “all applications” section.
lengths greater than 11 inches, you will need to add your own page size as described above in the “all applications” section.
lengths greater than 11 inches, you will need to add your own page size as described above in the “all applications” section.
lengths greater than
I depends on the way you are requesting the output, but this can be spaces or this could also be some \n\r tags for all the that you have inserted.
Did you try already to see the differences in short texts, to find you what it is exactly?
I think it are some \n\r tags, you should see these tags when you request the data in you code.. If not i'm sure it are spaces.
As per an example URL shortened here:
http://goo.gl/info/kW1c#week
What is the displayed 2D barcode for (copied here):
It's actually a 2D barcode, and it is a QR code. It is meant to print on stickers and what not to read with your cell phone camera.
http://en.wikipedia.org/wiki/QR_Code
Takes you to the webpage of the shortened URL (usually for mobile devices that can read a QR code).
bonus:
to get a QR code for a goo.gl URL - append .qr :
http://goo.gl/kW1c.qr
Quick answer: printing these barcodes on a webpage is a common way to let people visit/bookmark that page from their phone (using the phone's camera and barcode reader function).
It is important to understand a barcode is a piece of text data, and not an instruction. For example, the above bar code contains the text "http://goo.gl/info/kW1c".
It is the application reading the barcode which interprets it as an instruction. The data is read by a barcode reading application (for example, on a smart phone), and then an appropriate action is typically launched depending on the type of data. For example, if the text starts with "http://" a browser may be launched with that URL. If the data starts with "phone:" the phone application may be launch with that number.