https://community.nxp.com/t5/TapLinx-SDK-TagWriter-and/taginfo/m-p/2163598#M203 <P><STRONG><SPAN>Hello, I would like to ask why when I use tag info to check the card information, the first time I swipe the card, it shows NXP, but after I change the data, it shows suspected pirated. And sometimes when I swipe other cards, they show NXP, and sometimes they show pirated.</SPAN></STRONG></P> Thu, 04 Sep 2025 10:15:34 GMT umi2025 2025-09-04T10:15:34Z https://community.nxp.com/t5/TapLinx-SDK-TagWriter-and/taginfo/m-p/2163598#M203 <P><STRONG><SPAN>Hello, I would like to ask why when I use tag info to check the card information, the first time I swipe the card, it shows NXP, but after I change the data, it shows suspected pirated. And sometimes when I swipe other cards, they show NXP, and sometimes they show pirated.</SPAN></STRONG></P> Thu, 04 Sep 2025 10:15:34 GMT https://community.nxp.com/t5/TapLinx-SDK-TagWriter-and/taginfo/m-p/2163598#M203 umi2025 2025-09-04T10:15:34Z https://community.nxp.com/t5/TapLinx-SDK-TagWriter-and/taginfo/m-p/2163603#M204 <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="1df2b064919257bafb279f278dd7821e.jpg" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/355557iA32259872F5B0079/image-size/medium?v=v2&amp;px=400" role="button" title="1df2b064919257bafb279f278dd7821e.jpg" alt="1df2b064919257bafb279f278dd7821e.jpg" /></span></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="af3d0e93c7895a1eb5a1ef1010b76f00.jpg" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/355558iC1F16B2A925D56B8/image-size/medium?v=v2&amp;px=400" role="button" title="af3d0e93c7895a1eb5a1ef1010b76f00.jpg" alt="af3d0e93c7895a1eb5a1ef1010b76f00.jpg" /></span></P><P> </P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="3998cbe3cf71d7d8050d650d10ff192e.jpg" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/355559i59BAFD4913734ECE/image-size/medium?v=v2&amp;px=400" role="button" title="3998cbe3cf71d7d8050d650d10ff192e.jpg" alt="3998cbe3cf71d7d8050d650d10ff192e.jpg" /></span></P><P>  </P> Thu, 04 Sep 2025 10:17:28 GMT https://community.nxp.com/t5/TapLinx-SDK-TagWriter-and/taginfo/m-p/2163603#M204 umi2025 2025-09-04T10:17:28Z https://community.nxp.com/t5/TapLinx-SDK-TagWriter-and/taginfo/m-p/2164571#M206 <P>Hello <a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/253918">@umi2025</a>, Good Day!</P> <P>&nbsp;</P> <P>I would like to ask, what is the data that changed? And how did you change this data?</P> <P>Did the problem occur only after changing the data of the tags, or did it happen as well with unchanged tags?&nbsp;</P> <P>&nbsp;</P> <P>This issue could very likely be related to the antenna design, given the inconsistency of the data being read, RF communication errors could be present. Please refer to the NTAG Antenna Design Guide available at the <A href="https://www.nxp.com/products/rfid-nfc/nfc-hf/ntag-for-tags-and-labels/ntag-424-dna-424-dna-tagtamper-advanced-security-and-privacy-for-trusted-iot-applications:NTAG424DNA" target="_blank">product page</A> under "Documentation" and make sure the guidelines described are followed.</P> <P>&nbsp;</P> <P>If the tags were manufactured by a third party, please redirect this inquiry to the correspondent entity.</P> <P>&nbsp;</P> <P>My best regards,<BR />Daniel</P> Fri, 05 Sep 2025 20:09:53 GMT https://community.nxp.com/t5/TapLinx-SDK-TagWriter-and/taginfo/m-p/2164571#M206 Daniel_Gutierrez 2025-09-05T20:09:53Z