As NFC chips proliferate, so do the antennas they require for operation, and since many NFC-enabled items are single-use, this means there’s an opportunity to put them to other uses. It’s an avenue pursued by [Brother-live], as he strips the antennas from spent metro tickets and gets experimenting.
The antenna in an NFC-enabled card is a flexible PCB laminated between the plastic outer layers, with the tracks forming a coil round the outside of it. Using some solvent the cards can be easily separated and the antennas retrieved. Once the chip has been removed they can be cleaned up and soldered to, allowing wires to be connected.
What can you do with an NFC antenna? Not a huge amount as you can see in the (Russian language, English subtitles) video below the break, but he tries it as a not-very-good heating pad, a power harvesting antenna from NFC readers, and perhaps most promisingly, as the coil of a moving-coil speaker. We’re not sure how much effort would be worth making on that last front, but we think with a bit of care there might be room for audible improvement.
If you’ve ever been tempted to have a look at an NFC card, it’s a subject we’ve covered before.
38 thoughts on “NFC Antennas Have Other Uses”
Use for RFID perhaps?
NFC is RFID, innit?
Kinda the other way around (I think).
I’d say RFID is a specific subset of NFC.
Or RFID cards/etc use NFC to transfer data.
NFC is a subset of RFID, not the other way around.
Sort of. There are applications of NFC that wouldn’t really be considered RFID, like using it to setup a WIFI direct link and transfer files between phones. But there are RFID devices that are not NFC. For example, the ID chips they put in pets or the chip in a transponder key. Is a wireless credit card RFID? Maybe. What about apple pay?
The best answer I think is that NFC is a communications protocol. RFID is an application. Apples and oranges.
Apples and oranges is the best comparison. RFID is type of access control for purely identification, not authentication or confidence.
NFC is a protocol capable of handshaking to exchange information in a weak wireless P2P connection type.
NFC ANTENNAS HAVE OTHER USES: “ What can you do with an NFC antenna? Not a huge amount” 😒
1. You can use them as garbage.
2. You can use them as antennas for near field applications.
3. You can stick them to peoples backs at places where conspiracy theorists are speaking and watch the fun begin!
You can make a big pile of them and burn the plastic away so you can ‘recycle’ the copper into methamphetamine. lmao
“3. You can stick them to peoples backs at places where conspiracy theorists are speaking and watch the fun begin!”
lol, that’s the best idea I heard in a while
BWAAHAHAHAHAAAAAA….. O.m.g!! Number 3 is a good one.
Good stuff . . Ha.
“Well it’s pretty shit but we’re in too deep, hit publish, man!”
I put one on back of my phone. I have better incoming & outgoing reception in otherwise dead zones.
Those are the moments I don’t regret running ad blocking software.
Are there moments you do?
Of course. Superbowl!
a nfc proximaty ditector would be a good use for a repurpused one , built so it could give a audio notification that it is in range of a nfc reader , and incoparate it into the outer of a nfc sheelding wallet so you get a notification when something/someone is trying to skim it
useful add-on for a tinfoil hat !
I put 2 on my foil hat. Looks very fetching.
Why are we promotion Russian content?
Russian-language content could be from Russia, Ukraine, Belarus, Kazakhstan, Kyrgyzstan, or any number of countries. This particular one IS from Russia, but it’s just a normal person doing cool stuff. It doesn’t seem like they’re outwardly a war supporter or government-funded media.
Did you know Einstein and Eddington were corresponding between Germany and England about General Relativity during World War I?
Do not identify someone with their government or their military, unless they explicitly ask you to, or behave in a way that it becomes obvious. Wars happen because gullible people believe whatever propaganda their government throws at them, and happens in very country, including so called democratic ones.
Quick! I am going hunt up General Information and Colonel Sanders in the military database right now. How about Sergeant Slaughter and Captain Obvious next?
Don’t forget Corporal Punishment too.
Also General Foulup and Major Disappointment.
Yeah those guys are in my outfit.
Major Payne as well.
That was that best and most appropriate response. Thank you.
Go fly a kite.
What about a coil for a teeny tiny metal detector?
You can use it to harvest energy, however, to do it successfully, you’ll need to mount tens, if not hundreds of them in a grid array, just to harvest a tiny bit of electromagnetic background radiation.
Perhaps you can light up your bathroom with an LED from the experience. You’ll gain more energy from tapping off power from your landline phone, or generate electricity from a shower head or tap.
RFID Radio Frequency Identification
NFC Near Field Communication
Capitan Obvious is that you?
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