Correct me if I'm wrong, but I thought NFC enabled credit cards are passive NFC chips, they aren't self-powered, so they shouldn't be continuously generating a field, as depicted at 1:55.
yeah this person has provided false info all NFC chips are powered by the device reading them at close range they don't broadcast unless prompted and can be security key locked to prevent copying... Furthermore, the chip's code can only be emulated once without being present and well this dude is kinda fucked. He means that the NFC chip is open to long-range readers all the time but the emulation won't clone it into a usable credit card at all or for long anyway.
Picking up on the video and a comment already made before (see below) The NFC chips are passive and do not emit a signal unless they are in close proximity -( hence near field communication) to a powered reader i.e. an NFC enabled phone & I think you might just notice is someone is 5cm away from your wallet or purse!
Not all chips are passive. Chips like those in game based figures (Skylanders, Nintendo Amiibo, Disney Infinity, Lego Dimensions, etc) and chips in cards are passive, meaning they're powered when they're within range of the active chip; basically using the same tech as wireless charging. Active chips are in smartphones, card readers, and the 'bases' in the before-mentioned games. Passive chips can only transfer information to the active chip, nothing else; Active chips can exchange information with other active chips and read information from passive chips. Passive-passive will not work, ever; but active-passive and active-active will always work. Also you have to approve information transfers. Card-reader transfers have to be accepted on the reader side, just as any time you pay with a card. Phone-reader transfers have to be accepted on the phone side in most cases, haven't ran into a situation where you have to accept on the reader side. Phone-phone transfers have to be accepted by both, just like any bluetooth transfers. And if card-phone transfers are possible, haven't tried it yet, but I doubt they are possible due to obvious security flaws on the card side.
The advantage of the chip is that the encryption is scrambled every use. Therefore a hacker (thief) won't be able to easily copy the code used for a single transaction tracking its roots. The NFC to me is much more easier to manipulate and take advantage of. But the technology is pretty awesome nonetheless
just a question in the event Anna's phone is lost or stolen how can she retrieve her data or make transactions? considering that NFC is the only method of payment that people can use
soon she lost her phone, she can deactivate her account. Later, she can login through another phone. But for NFC, she should contact customer care to deactivate that cardID.
