Tagged Questions

0
votes
1answer
99 views

Howto use/shield NFC/RFID Sticker on back of iPhone 5? [closed]

I want to stick a RFID sticker on the back of an iPhone 5 (between a case and the iPhones back to be precise). The sticker is an Mifare DESFire EV1 sticker, in case that matters. Problem is, the tag ...
1
vote
2answers
103 views

What technique/sensor can I use to recognized tagged objects thrown onto a surface? [closed]

I am trying to implement a concept for somebody else. Basically, I want to create a smart surface. I want to create a surface I can throw one or more tagged objects on that should all be recognized. ...
2
votes
1answer
2k views

Read RFID tag with NFC reader?

Can I read passive RFID tag (125/134 kHz) with a NFC tag reader, like the one on Samsung Galaxy S3 ? If not, why: maybe because of the different frequency of the NFC reader (13,56 MHz)? Any way to to ...
5
votes
1answer
360 views

How do I determine what kind of proximity sensor / RFID hardware is in a device?

I have several objects in my pockets that do stuff when I put them near things: A token to disable a house alarm A Transport for London Oyster Card A security pass And in the ...
2
votes
1answer
96 views

Options for object tracking

Say a company has a parking garage for its employees, and they want to track the traffic in and out. So they require that all employees put some kind of tag in their car window, and they have some ...
5
votes
5answers
2k views

Options for short range distance determination between two objects

I have a project idea in mind, but it involves calculating the distance between two people. I've looked into Bluetooth, RFID, and NFC (unsure about this one), but none appear to offer the accuracy I ...
2
votes
2answers
258 views

Does RFID interfere with NFC

i have a small question about interference. Do active RFID (860 MHz) interfere with NFC cards (13.56 Mhz) when placed on top of eachother? (NFC above RFID tag for example). Thanks!
2
votes
1answer
250 views

How does Sifteo and Scrabble Flash tiles handle proximity and ID?

Sifteo and Scrabble Flash These tiles will sense and ID tiles that are adjacent to each other. On the Sifteo site it mentions proprietary near field sensing technology. How does it work? Does each ...
1
vote
0answers
243 views

Will NXP NFC PN532 work connected to an antenna grid that is multiplexed?

Can I operate say 36 different antenna monitoring tags against a grid of small 2" x 2" squares by simply connecting the antenna to something like the NXP NFC PN532 through a multiplexer (N-to-1 ...
1
vote
1answer
428 views

Visa payWave, MasterCard PayPass and ExpressPay, NFC and RFID

Since all those technologies use RFID contactless smart card and EMV, are they compatible? Is contact-less Visa card compatible with the Mastercard system? Are the systems compatible with NFC? I.e. ...