Simply amazing !

can someone explain me what they mean with this I don't get it I'm to dumb

#3. Barcodes work with a line. This means you need to have it in a specified orientation before it reads. a RFID tag can be read from a much further distance. I think even 100's of meters. and in any orientation.

#2 RFID = Radio Frequency IDentification. Basicly you have RFID tags. That can hold information. And you have the readers. Who read the information. Most of the time they are used to enable you acces. For example when you are in the proximity of a door the door unlocks. Or you can automaticly pay when you get out of a bus. The last one is integrated in holland right now but it's not working a 100% properly.

There are systems where the tags also can read information instead of send it out to a reader.

This is a general insight in the RFID system. Not everything.


BTW its handy to know where the fields could be or what they look like. This wil help some people to understand it. You make something abstract concrete.

Hope this clearify's the video a bit. And sorry if my English is not clear enough.

#4 Not 100s of meters, best case scenario RFID-tag and -reader combinations top out at around 120 feet / 40 meters. Most RFID tags however are used in NFC environments, with the N standing for Near and the rest for Field Communication. The Oyster Card shown in the video (prepaid public transportation system in the UK) needs to be within 2 inches / 5 centimeters of a terminal to register on a bus for example.

#4 Your brief summery of RFID and the comparison to Bar Code is quite good. The effective read distance is determined by the reader, but I believe your statement of hundreds of meters is a little optimistic, for now anyway.
RFID is why my wallet incorporates Faraday shielding for several years now. For those of you that have half a clue, take the foil out of your hat and put it around your cards.

Why would anyone want to move society in a direction where you're constantly transmitting everything about you?
Constantly transmitting your bank information, medical information, ID, etc... all of that seems kinda 1984 to me, especially when you know that pickpockets no longer will have to pick your pocket, just stand next to you.

#4 so if I go in the bus in my country I would pay? I thought we had to scan a card in front of a reader I did it once and I had to put it a milimeter or something away from it or it couldn't read it so it sucks actually

For those who do not understand what #7 is refering to,here is a news segment on the RFID info theft danger......

http://www.youtube.com/watch?v=T0Uc_s3XzSs&feature=related

That's a good example #11, exactly what I was alluding to, but don't pay what those crooks charge for those wallets. I've priced a few of them and they're using fear to price gouge. I carry a wallet made of duct tape, double shielded with aluminium and copper foil. It cost me about $16.00 to make four of them, as opposed to $40.00 to buy one.

RFID is simply a small antenna that transmitted a short range radio signal. Therefore, it is a Electromagnetic field that we are seeing in this video. Although this is a clever way of demonstrating the emitted field, the field can be calculate using Maxwell equations and generated computer wise. This would be an useful tool in reverse engineering the device though.