NFC "Range" Comparison

[RossParticipant]

I see you guys sell the ACR-122U on your site. We currently use the ACR-122U with Android Phones in Host Mode and it works well. But I would rather not have the extra kit for my project if possible.

We find that with the NFC-122U, it finds tags very well (given it’s size) and recognises about 95% accurately from within a range of 2-3cm (1 Inch) from the ACR-122U.

Has anyone done a comparison of how accuratly the FloJack reads (I guess this is probably phone dependent?) and what range we could expect with say a S3?

[RichardKeymaster]

Hi Ross, I haven’t done a test with the FloJack v2 explicitly but have done extensive testing with the NFC Patch Kit. The NFC Patch Kit comes with an antenna size that matches the FloJack v2 so I would expect similar results. You can review the results of that testing here:

The NFC antenna design on the S3 is more compromised than the FloJack and NFC Patch Kit given it’s placement inside the battery and close proximity to surrounding active components. Although I haven’t explicitly measured the difference, based on experience I would venture to say so.

[TrentParticipant]

Hi Richard,

Have you tested NFC signal distances/strengths when an object is placed between the Antenna and tag?

For example – ABS plastic, rubber cases, metals etc.

[TrentParticipant]

I notice you have a kiosk stand that you use in your Youtube video here:

NFC Kiosk

Out of interest what material is this stand made from? – it looks like ABS…

[RichardKeymaster]

Hi Trent, we’ve built kiosk stands for different customers using several non-conductive materials like ABS plastic, rubber, wood, and fabric. The NFC Patch Kit performs well in all cases with little impact to the read range covered in the stress test video above. The NFC Patch Kit (or NFC reader itself) will not work through metal.

The kiosk shown in the NFC Kiosk product page is indeed made of ABS plastic. We 3D printed it.

[Author]

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