rfid vulnerabilities

RFID (Radio Frequency Identification) is a non-contact automatic Identification technology. It uses RF signals to automatically identify the target object and obtain relevant data. manual intervention is not required for Identification, it can work in various harsh environments. RFID technology can recognize high-speed moving objects and recognize multiple tags at the same time for quick and convenient oper

RFID modulation and EncodingModulationSound is converted to electricity by a telephone and then transmitted as an analog signal.These waves has 3 fundamental characteristics: Amplitude, meaning the height (intensity) of the wave Frequency, which is the number of waves this pass in a single second and was measured in Hertz (cycles/second) (Wavelength, The length of the wave from crest to crest, was related to frequency.). Phase is a th

Currently, passive labels use the following four cycle bands: 1) less than kHz 2) 13.56 MHz 3) UHF Band (860 ~ 960 MHz) 4) 2.45 GHz As shown in table 4, the labels of these weekly wave bands have different characteristics. 1) less than kHzPassive tags are powered by the reader, so the IC circuit cannot obtain a large current. In the era when low power and high cycle circuits cannot be developed, passive labels of the week wave numbers below kHz are used. At that time, the price was very high

transmission distance is limited, and the signal has a direction. 5) Advantages of Bluetooth: high terminal penetration rate, long transmission distance, and no signal direction. Disadvantages: high costs and high interference. 6) Advantages of RFID: it provides unique product identification and fast and efficient billing process. Disadvantages: High tag costs, large investment in infrastructure construction, infringement of buyers' privacy, inconsis

Now, the logistics company places the goods in the distributed area, such as at the school gate. The pick-up personnel (students, etc.) will collect the parcels that are messy and placed on the ground, in the event of inefficient and time-consuming searching for your own packages, queuing payment, and so on, I would like to express my views on this issue, hoping to give you some tips. The basic idea is to develop mobile phone applications, use mobile phone photography,

In the actual application, when we get a UHF label, often want to know the capacity of its various storage area is how much, especially programmers do the program, it must know what the chip, some characteristics, in order to do a better service for the program, not blind, Otherwise, the development of the program may cause a variety of unforeseen problems. So how do we know what the label is in the hands of the brand, what chip? Here's how to tell us how to identify the UHF label chip model.UHF

Brief answer:The reasons for the diversification of RFID standards are briefly introduced:It is caused by different technical factors and benefit factors: The operating frequency is distributed in multiple frequency bands of low-frequency to microwave, with different frequencies and large technical differences. The difference of the range of action leads to different standards: the transponder is divided into active and passive modes of opera

Related: There are three things about RFID cracking. Three things about RFID cracking.I slept on the train for one night last night. I just got home and didn't wash my face. I saw too many visits and comments in the article. radiowar was in my article comment and his article comment, when talking about cainiao, Tom, and my articles with incorrect content, and misleading people, I thought I had to come up an

The Passive Tag does not generate electricity itself, but uses the radio waves sent by the reader as the power of the IC circuit. This is divided into two types: the induction mode and the electric wave mode (Figure 3 ). Electromagnetic Induction: receives the time-varying magnetic field from the reader through a ring antenna to provide power to the IC circuit. This is the same principle as a turbine generator (Tony Note: How is a turbine generator working? ). Radio waves: In order to effect

In the actual application of RFID, due to the large data volume, the customer needs to occupy multiple sectors and blocks. In the previous interface, only one block can be read for one interaction. When the data volume is large, interaction takes a long time. Based on this demand, I am an RFID MicrocontrollerProgramAdded the continuous multi-block READ function. Before implementation, determine whether t

Absrtact: This design combines the embedded technology of ARM and Linux with RFID technology, which has special significance for realizing the low power, portable and network of mobile payment terminal. The first is the use of MF RC522 chip design and production reader, to achieve the Mifare card reading and writing operations, followed by the use of s3c2440a chip and Linux to build an embedded system as a hub for communication and processing of the m

Absrtact: This design combines the embedded technology of ARM and Linux with RFID technology, which has special significance for realizing the low power, portable and network of mobile payment terminal. The first is the use of MF RC522 chip design and production reader, to achieve the Mifare card reading and writing operations, followed by the use of s3c2440a chip and Linux to build an embedded system as a hub for communication and processing of the m

A future credit card designed by Jacob to display the consumption ratio Security Features of fingerprint recognition, and display transaction records A major reason for credit card flooding attacks is that consumers do not know how many injuries they have when swiping their cards, you must wait until you go to the ATM, online bank, or even the bank sends a bill to know that the blood has been lost.But recently a Swedish young designer Jacob? Jacob Palmborg has designed a credit card for future

as an example. Generally, an encryption algorithm is used to generate a unique card password based on the unique ID of the key and card. When reading a card, read the card ID, generate a card password based on the algorithm and key, and then use the password to read the card content or even write the card. The PSAM card is essentially a single-chip program and E2PROM file system. If you do not use the PSAM card, you can also use software to implement this process. Although the implementati

A BS structured system that invokes client hardware, such as an RFID reader, on a client computer through a browser.

, equivalent to Text.file modified file)Break it to the end of it.Here is a way to install MFCUK.Tar xzvf mfcuk CD Mfcuk Autoreconf-is ./configure Make Modify Src/makefile before Ps:make, copy the value of Libnfc_libs to the back of LibsForget to remind everyone that the googlecode because it is open source, so many Mfoc and Mfcuk code is not exactly correct.I remember the latest version of MFOC and Mfcuk (built on the LIBNFC 1.7 platform) seems to be missing A in a C

The basic working principle of RFID technology is not complex: After a Tag enters the magnetic field, it receives the RF signal from the interpreter and sends the Passive Tag of the product information stored in the chip based on the energy obtained by the induction current, passive or passive tags), or actively send signals of a certain frequency Active tags, Active tags or Active tags); the interpreter reads and decodes the information, to the centr

A BS structured system that invokes client hardware, such as an RFID reader, on a client computer through a browser. BS structure of the system, the client has installed the RF card reader, the driver is also installed, working properly. After the customer login system through the browser, want to directly through the browser to access the card reader, can be achieved, Firefox and Internet Explorer can support it. ------Solution-------------------- Th

Backstage Manager to each product affixed to the RF card as a unique identification, so to the corresponding RFID card to write the response information, I here in order to facilitate the simulation of the demo only write product number, price, name of these fields, and then to put the written goods uploaded backstage, Written from the background to the commodity table (Goods) in the database, where VB accesses the backend code as follows:

1. The file replacement command is useful in Windows to bypass file protection.Replace is used to replace a file, and can be replaced with a file in use. Very invincible.For example, create a directory under C: c: aaaCopy an mp3 file to c: aaa and name it c: aaaa.mp3.Then copy another song to C: a.mp3.Then play c: aaaa.mp3 with media playerEnter: replace c: a.mp3 c: aaa at the command promptAfter a while, whether the Playing Song has changed to another one.It's really nice to use this command to