| General > General Technical Chat |
| Credit Card, Bank Card NFC. The most useless function every invented |
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| SilverSolder:
--- Quote from: SiliconWizard on March 04, 2022, 05:36:12 pm ---So yeah. NFC is convenient, and reasonably secure. It only works reliably at very short distances, despite some lab experiments claiming to have shown communication with NFC devices at several meters - it's either bullshit or requires very expensive equipment. Contrary to RFID in general, NFC is tuned for very short distances. Now there's still the possibilty of losing your card and anyone can use it for NFC payments - but as some have said, it's limited to a relatively low amount per day. Of course, it could still be pretty annoying if you're broke. But these days you can declare the loss of a card very quickly (as long as you are aware of it...) and it'll get blocked. All in all, it's a relatively convenient feature with not that many downsides. What I personally find more concerning is the way it's linked to a completely cashless society, which is a big can of worms, and the topic largely beyond this thread. --- End quote --- Not wishing to stray the topic off course, but I agree with that. I think some form of cash (or cash equivalent) will always exist, even if people begin using cigarettes instead of bills etc. :-) |
| langwadt:
--- Quote from: SiliconWizard on March 04, 2022, 05:36:12 pm ---So yeah. NFC is convenient, and reasonably secure. It only works reliably at very short distances, despite some lab experiments claiming to have shown communication with NFC devices at several meters - it's either bullshit or requires very expensive equipment. Contrary to RFID in general, NFC is tuned for very short distances. Now there's still the possibilty of losing your card and anyone can use it for NFC payments - but as some have said, it's limited to a relatively low amount per day. Of course, it could still be pretty annoying if you're broke. But these days you can declare the loss of a card very quickly (as long as you are aware of it...) and it'll get blocked. All in all, it's a relatively convenient feature with not that many downsides. What I personally find more concerning is the way it's linked to a completely cashless society, which is a big can of worms, and the topic largely beyond this thread. --- End quote --- if for nothing else because if you have your card blocked or lost, you are totally screwed waiting for a new card arriving in the post |
| Halcyon:
--- Quote from: rob77 on March 04, 2022, 08:33:11 am --- --- Quote from: Halcyon on March 03, 2022, 09:53:57 pm ---rather stealing cards from mailboxes and selling those details online is a popular move. --- End quote --- that's something that can be solved by 3-D secure , it's being heavily implemented in europe. once all card issuers, payment processors and merchants will implement it , stealing the card itself or copying it will be pointless. --- End quote --- Some banks here implement 2FA for online purchases. My bank uses "Verified by Visa". A lot of it comes down to personal security too. I treat my wallet like I would a wad of cash. I don't leave it laying around and I don't just chuck it at the front door when I arrive home. Gone are the days when crooks break into houses looking for electronic equipment of valuables, they go for your cards and identification (drivers licence etc...) and sometimes your car keys. I also use a PO Box (I don't even have a mailbox at my house), that way, new cards are never sitting out on the street, unattended. --- Quote from: SilverSolder on March 04, 2022, 03:06:05 pm ---When cars were made more difficult to steal, car-jackings increased instead... criminals will be criminals, they just go for the lowest hanging fruit? --- End quote --- 100% |
| edtyler:
Defcon in 2018 and 2019 had several presentations where NFC cards were read from a distance of > 5 meters. Are you suggesting that no one would ever attempt to steal money from a gullible hipster carrying NFC enabled cards? Fortunately, the solution is easy. Simply drill a hole through the card, breaking the NFC antenna and rendering the "feature" inoperative. |
| ataradov:
Can you link those presentation? They may have read some aspect of the card, which is also questionable. But there is no way to perform a transaction without having a real bank account linked to the terminal. It is impossible to read and store some information from the card and use it later. If anything, the weakness here is the fallback mode, which is how a lot of the abuse happened initially. I think this is going away now too. |
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