RFID embedded $20's?

[Grifter]

If I'm not mistaken you need to be within a few feet of the RFID tag to receive its signal. They aren't very powerful at all since they have no power supply.

[FAWCR]

If RFID tags do become mainstream I wonder if you could Wardrive for RFID signals? just a though

I'm sure that you can "Wardrive for RFID's" but remeber due to the limited range (3' max) you might have a problem getting close enough with out invasion of privacy or breaking and entering....

[KeLviN]

If I'm not mistaken you need to be within a few feet of the RFID tag to receive its signal. They aren't very powerful at all since they have no power supply.

it is technicaly possible to read/power rfid from a distance. but it requires a very sensitive reciever. you could power it with a small microwave transmitter... but then you risk cooking the carrier.

[thegreat682]

First, RFID chips need power which can be derived from radio frequency energy and gathered from an antenna.

Not necessarily. The RFID could be in a 'passive' mode where it could only report information back while being powered by a scanner. There is a Cold War story where the Russians gave a statue as a gift to a US Embassy. Of course, the statue was scanned looking for bugs and nothing was found. However, the Russians had planted a passive bug that would only work while shooting microwaves at it. I do not know whether this story is true or not. It sounds good though.

[murakami]

Not necessarily. The RFID could be in a 'passive' mode where it could only report information back while being powered by a scanner. There is a Cold War story where the Russians gave a statue as a gift to a US Embassy. Of course, the statue was scanned looking for bugs and nothing was found. However, the Russians had planted a passive bug that would only work while shooting microwaves at it. I do not know whether this story is true or not. It sounds good though.

First, that is exactly what I mean about the chip needing to be powered from an RF source.

Second, that is a well known incident, see:

http://www.spybusters.com/Great_Seal_Bug.html

[phobal]

They already have that, it can read the number. This reminds me of the British Pounds, where there is a strip of silver in the note, and each note is actually worth something than representing something.

There was a time our paper was a receipt for gold or silver, the good o' days....

i think the current sytem of texturizing the paper, putting extremely fine print on it, and leaving little security features is the best method to guard currency. scanning shit or putting it up to a reciever much like a prox card is time consuming, unreliable, and just stupid. not to mention that it can be exploited, like anything else. and look at the inconvienences it has caused those dudes at the truck stop!

[[Syntax]]

This topic was discussed at length in 3 lectures at Dallascon in May. They talked about some of the uses, such as tracking an items path in a store, as someone carries it in a basket, taking a store inventory by a simple click, and finding items which show on inventory but are in the wrong part of the store.

They discussed the obligation of stores to disable the tags once they leave the store, and the uses of the store. Such as someone walking in to a store, wearing an article of clothing, a sales person might be able to see what else the person has purchased, and attempt to sell them matching items. Or even greet them personally at the door..

They also discussed how much it costs to manufacture them, as low as a nickel $0.05 when purchased in bulk, and who is already implementing them.

The money thing was also brought up, and personal privacy, such as what if someone walked by you, and could tell what electronics or money you are carrying.. Easy for someone to target you..

Or someone could scan a car, to determine if its worth breaking into.. find out the contents of the car..

One lecturer talked about the invention of a device which could carry millions of RFID's. When you were scanned, the scanning device would be flooded with tons of invalid replies mixed with the valid items your carrying, thus defeating the ability to verify your personal contents. A signal blocking device was also discussed..

http://www.dallascon.com/agenda.asp
If your interested in the talks, the conference CD is being provided free via PHLAK.org http://www.phlak.org/modules/mydownloads/

I couldnt link the archive file directly I tried, Im now labeled a leecher "Your IP has been logged"

[astcell]

What the hell good is a security measure no one but the Secret Service can detect? Should not ALL people be knowledgeable on this?