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Asked: 2026-05-23T15:36:19+00:00

So here is my basic motivation for my question obfuscated a little: I want

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So here is my basic motivation for my question obfuscated a little:

I want to track a users loyalty to a particular store. Each store would have a NFC sticker on the register. On purchase the user would use an app on their phone (NFC available of course) and the sticker would send back some code that designates the store.

Now here is my question, one, can I send a simple code back to my application that is then, for example, added to some database? This link, near the bottom, provides a description of ‘Content Options’ none of which I want. Also, the NFC-Forum specifications don’t tell me much (or I’m just not looking in the right place).

Also, how do I actually put this tag/code onto one of these stickers? If I do it myself can I make them read-only?

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1 Answer

  1. Editorial Team

    you can put arbitrary information on the NFC tag – there is no limitation what you can upload and in which format. Think about NFC tags like if they were normal data storage places like e.g. hardrive or CD – to those you can save to them files with arbitrarty format holding the arbitrary content. Same with NFC tags.

    Anyway there is recommended NFC Forum standard for the content format called NDEF (NFC Forum Data Exchange Format is a lightweight binary message format designed to
    encapsulate one or more application-defined payloads into a single message construct.    )

    Also for specific data (links, Phone number, calendar event, etc.) there is another recommended NFC Forum standard called RTD (Record Type Definition specifies the format and rules for building standard record types used by NFC Forum application definitions and third parties that are based on the NDEF data format).

    So in fact you can use arbitrary data format or NDEF, for the data itself you can follow RTD recommendations or not… It is up to you.

    For tag writing you can buy some existing software and USB NFC reader/writer or you can program your own software – this is more difficult, since you must know HW characteristic of tag you would like to use.

    All tags allow permanent data locking.

    Regards,
    STeN

    http://www.mautilus.com, petr.mazanec@mautilus.com

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