Questions tagged [nfc]

For questions about devices that use near-field communication for data transfer.

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Small RFIDs Emeetters/Readers

I need to design an embedded system using raspberry pi, it's basically a small box (of a width that's arround 25cm), which contains a certain number of slots. I need to place some transportables ...
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NFC Reader for Java Card except PN532

I want a reader that can communicate with Java Card through APDU. I know PN532 can do this but its prices of are increasing day by day as it becomes obsolete. I was thinking of RC522 but I am not sure ...
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Can a NFC card be non-writable?

We're looking to create a system for public transportation ticketing using NFC cards, but I'm wondering if there's any way to occupy an NFC that's non-writable, for example: You put money in the card,...
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Dual-interface JavaCard on wafer with ECDSA (and I2C)

I'm looking for a JavaCard model that supports dual-interface (ISO 7816+14443), with ECDSA acceleration and optionally I2C interface. Available in wafer for custom NFC antenna and flip-chipping. Do ...
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37 views

Are there NFC transmitters/readers that plug into the 3.5mm audio port on my phone?

I have a Moto E5 Play, which does not have built-in NFC capabilities. I'd like to be able to use Google Pay and other apps that require NFC. Are there NFC transmitters/readers that plug into the 3.5mm ...
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Inexpensive NFC reader for (Windows & Linux) login

I see cheap NFC rings on eBay and elsewhere. I was wondering if there is a very cheap NFC reader which I could use to detect such a ring and use it as an HID keyboard (probably over USB) to input my ...
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189 views

Budget phone with NFC

I'm looking to buy a smartphone in the U.S. that has NFC and clean Android (i.e., no bloatware). I'm also looking for a phone that is reasonably priced and that has a decent processor. I know these ...
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17 views

hands-free Android NFC reader

I am looking for an Android device with NFC reader capabilities, which must be rugged (professional outdoor use) and possibly leaving the operator with free hands. My first choice would be a ...
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67 views

Homemade NFC scanning antenna?

I have been reading about NFC and was wondering If it was possible to make a NFC scanner antenna to read NFC signals from a further distance. I do understand that the N in NFC stands for Near that's ...
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34 views

Apple security fob

I work with a software development team inside local government. Our team have developed an app for Apple IPhone 6 SE with Cordova that requires carers to "check-in" to client visits. Clients ...
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NFC wand (or shield, or other) for Raspberry Pi

I am developing a system to register visitors. The visitors wear a wristband containing an NFC tag. In order to read the tag, I am currently using a cheap Samsung Android phone, with built in NFC ...