Mifare Ultralame



  • Mifare Ultralight is unsecure. Yes-yes, you cut the 2/3 of antenna and now a lot of nfc-phones cant detect a ring and all other require a long search of the "sweet spot", but it's not a solution.

    Are there any possibilities to add Mifare 1k or 4k chip to ring to rule em all?
    Do you have plans for... I dunno... carbon ring with good antenna?



  • Hmm a full carbon ring is an interesting thought, no idea if its possible or not @johnyma22


  • NFC Ring Team

    There are 2 questions here:

    1). Are there any possibilities to add Mifare 1k or 4k chip to ring to rule em all?

    Yes. But as you add more IC crypto the read performance drops so we have to compensate for that. This is part of our R&D cycle at current, we hope to have a product this year.

    1. "carbon ring with good antenna?"

    A full Carbon Fibre ring is a bad idea. I did look into this. There are a bunch of reasons, here are the top 3.

    1. No comfort fit
    2. Risk of epoxy de-laminating and carbon damaging skin
    3. Carbon Fiber in it's natural form detunes antenna

    RE "good antenna" point of this question, their is no such thing as a "good" antenna. There are just well and poorly tuned antennas. Our antennas are exceptionally well tuned considering the scale we work at and the environment our antenna exists. However since the first prototype we have made leaps and bounds in this area and will continue to do so. Again we should have some more announcements in this area soon..

    I hate keeping things under wraps a bit but until we are confident in our next prototypes I don't want to make huge promises!

    J



  • . "we hope to have a product this year". It's nice.

    Do you have a plans to allow to select type of one chip? For example, I can use low-freq RFID instead of second Mifare UL chip.

    Carbon was an example. Ceramic or any other looking-good non-metal would be nice too.

    About antenna: The TiMER2 ring have almost twice better working radius so I can use it with my Philips I908. But it looks so ugly and it's almost 1mm wider.


  • Community Helper

    @Hellsy 125kHz rfid is quite different to 13.56MHz NFC. There would be major tuning issues at the very least, and if possible at all then there'd be an age worth of R&D before it were a reality. You can't just build on the back of what has currently been done, you throw it all out the window and start again.

    The "timer 2" ring appears to be no more or less a cheap, rushed knockoff than any of the others we've seen. Larger read distance will be a function of IC type and metal density. Think cheap.

    To look back to your first post, since you're all full of sarcasm and misunderstanding;

    "Mifare Ultralight is unsecure. Yes-yes, you cut the 2/3 of antenna and now a lot of nfc-phones cant detect a ring and all other require a long search of the "sweet spot", but it's not a solution."

    The antenna on the NTAG203 inlays that John uses is a custom design, correctly tuned to function consistently while inside a titanium shell. That's an achievement that doesn't deserve to be shrugged aside like that, it takes time money and a lot of effort to do these things. As to the NFC phones, it's not a lot that have issues. As with everything, you tend to hear the complaints more than the silence of satisfaction. Just because you hear complaints doesn't mean everything is ruined... it just means that sometimes, poorly built and badly designed phones are failing to read rings when their design problems are exacerbated by wear and tear in use.
    The solution is up to the phone manufacturers, not the accessory manufacturers, yes-yes.


Log in to reply
 

Looks like your connection to NFC Ring Forum was lost, please wait while we try to reconnect.