Contactless smart cards

Contactless smart cards
    A contactless smart card refers to a type of sensing smart card, usually placed on a machine, and the machine automatically detects and recognizes it. It is a widely used new type of smart card, professionally called a contactless smart card. The inductive card does not require a power supply; the receiving antenna senses power from the reader's magnetic field, processes the data, and feeds it back to the reader.
    The inductive card itself is passive. When the reader performs a reading or write operation on the card, the signal sent by the reader consists of two parts: one is the power signal, which resonates with the card's own L/C and generates a momentary energy supply to the chip to operate. The other part combines data signals to direct the chip to complete data, modifications, storage, etc., and then return it to the reader/writer.
    Contactless cards are currently the most widely used and frequently used new type of smart card. We see them everywhere: for enterprise access control, for school meals, for elevators, for bus swiping, and for campus all-in-one cards, this shows how frequently and widely used contactless cards are in daily life.

 

Introduction to the proximity card:

An RFID card, also known as an RFID card, is made up ofICThe chip and sensing antenna are all packaged in a standard packagePVCInside the card, there are no exposed parts of the chip or antenna. It is a new technology developed in recent years worldwide, successfully combining RFID technology with contactless card technology, solving the problems of passive (no power supply in the card) and contactless requirements, marking a major breakthrough in the field of electronic devices. Cards within a certain distance range(Usually5—10mm)Close to the reader's surface, data read/write operations are completed through radio wave transmission.

An RFID card is a new type of smart card, with functions similar to that of contact SIM cards,IDThe card is the same, except it does not require a power supply; instead, the receiving antenna draws power from the reader's magnetic field and processes data to feed back to the reader. Sensor card by defaultICThe chip consists of an induction antenna and is completely sealed under a single standardPVCThe card contains no exposed parts. The read/write process of an inductive card usually involves radio waves between the card and the reader/writer to complete the read/write operation. The inductive card itself is a passive entity. When the reader performs a reading or write operation on the card, the signal sent by the reader consists of two parts: one is the power signal, which, after being received by the card, is combined with its own signalL/CResonance is generated, generating a momentary energy to supply the chip to operate. The other part combines data signals to direct the chip to complete data, modifications, storage, etc., and then return it to the reader/writer. The read/write system formed by contactless inductive cards greatly simplifies both hardware structure and operation processes. At the same time, advanced management software and offline operation methods make data reading and writing much simpler. 

Contactless cards are currently the most widely used and frequently used new type of smart card. We see them everywhere: enterprise access control uses contactless cards, schools use cards for meals, elevators use cards for card swiping, and campus all-in-one cards use contactless cards. This shows that contactless cards are used very frequently and widely in daily life. So, what exactly are contactless cards, and why are they so magical? 

Probing Card Dimensions:IS0Standard card85.6×54×0.80 /Thick card/Alien cards

Inductive Card Storage Capacity:8Kbit,16Partitions, with two sets of passwords per partition

Operating frequency of the induction card:13.56MHz

Induction card communication speed:106KBoud

Reading and writing distance of the proximity card:2.5~10cm

Reading and writing times for proximity cards:1~2ms

Induction card operating temperature:-20℃~85℃

Lifespan of the induction card for erasing and writing:>100,000Times

Contactless Card Data Storage:>10Year

Induction Card Packaging Materials:PVC、ABS、PET、PETG、0.13mmCopper wire

Induction card packaging process: ultrasonic automatic wire placement/Automatic contact welding

Standards for proximity cards:ISO 14443，ISO 10536

Contactless card function: supports multi-purpose use with one card

Typical applications of contactless cards: enterprises/Campus all-in-one card, public transport stored-value cards, highway toll collection, parking lots, residential communities/Park management, etc

Advantages of proximity cards:

The inductive cards used are currently the most widely used, most mature, most stable in performance, and have the largest memory capacity in the worldMIFAREThe card retains the contact typeICIn addition to the original advantages, the card also has the following features: 

High reliability

There is no mechanical contact between the induction card and the reader/writer, avoiding various faults caused by contact with read/write. For example:Faults can be caused by rough card insertion, insertion of non-card objects, dust, or oil stains causing poor contact. In addition,,The surface of the induction card has no exposed chips, eliminating concerns about chip detachment, static electricity breakdown, bending damage, and other issues. This not only facilitates card printing but also improves card reliability.

Easy to operate

Due to contactless communication, the reader and writer are present10CMYou can operate the card within the range, so there's no need to insert or dial a card, making it very convenient for users to use. Contactless cards have no directionality when used; they can glide across the reader's surface in any direction, completing operations and greatly improving the speed of each use.

Conflict prevention

Sensing cards include a quick anti-collision mechanism,It prevents data interference between cards, so the reader can process multiple contactless cards "simultaneously." This improves application parallelism,,This invisibly increases system operating speed.

Suitable for a variety of applications

    The serial number of the proximity card is unique, and the manufacturer has already stabilized this serial number before the product leaves the factory,It must not be changed again.

    A two-way verification mechanism is used between the contactless card and the reader/writer, meaning the reader verifies the legitimacy of the contactless card, and the proximity card also verifies the legitimacy of the reader/writer.

    Before processing, the proximity card must undergo three mutual authentication with the reader, and all data during communication is encrypted. Additionally, each sector on the card has its own operation password and access requirements.

Encryption performance is good

    Sensor card by defaultICThe chip consists of an induction antenna and is completely sealed under a single standardPVCThe card contains no exposed parts. The read/write process of an inductive card usually involves radio waves between the card and the reader/writer to complete the read/write operation.

    Composition:Part of it is the power signal, which is received by the card and then by itselfL/CResonance is generated, generating a momentary energy to supply the chip to operate. The other part combines data signals to direct the chip to complete data, modifications, storage, etc., and then return it to the reader/writer. The read/write system formed by the inductive card greatly simplifies both hardware structure and operation processes. At the same time, advanced management software and offline operation methods make data read/write much simpler.

Instructions for making proximity cards

1: The correct draft iscoreldraw,AI,photoshop，pdfDocuments. Text, symbols, and patterns must be converted to curves, with special effects converted into bitmap images;

2:Inner Frame Specifications:85.5mm*54mm,Frame specifications:88.5mm*57mm,The card fillets are 12Degree;

3: The small bump code is14The font size is large, with large raised codes as 18The font can be represented by Heiti,Small and large convex codes include spaces at most19Position. Embossed codes can be gold-foiled, silver-foiled, or other gold and silver types. Special requirements can be personalized embossed designs;

4: The margin between the prominent code and the card must be greater than 5mmThe inner edge (top and bottom) of the magnetic strip spacer card is as follows4mmThe magnetic stripe width is 12mm；

5: Contactless typeICCard: The embossed code design should not press the chip on the back, otherwise the chip will not be able to swipe the card;

6: The raised code design should not be pressed to the reverse sideICOtherwise, the chip cannot read barcode data,ICCards reserve slots based on the barcode model provided by the customer;

7: Color gradation: The ideal stage range is within the range18%-85%If the highlight is lower18%Or the darker tone section is higher85%the color gradient is poor;

8: The color mode should be CMYKFront and back are filled in pure black text or black backgroundK100Solid color blocks with white text should be reversed, with white borders added;

9: The thickness of the lines must not be less than that0.076mmOtherwise, the print will not be presented;

10: The background pattern or background color should not be set below the required level8%To avoid being unable to present printed waste;

11: Before placing an order, documents for producing contactless cards should include the following items in the manuscript:

AIndicate how many cards are produced in total,Indicate which card number it starts from and any special requirements,Is the card number small bump, large bump code, flat code, or spray code?

Do you need gold stamping, silver stamping, or no color stamping? How many signature strips are there on the back? Card number or suffix is used for "4Or"7Should it be removed;

BIf the front has patterns or text that require gold or silver stamping, it should also be emphasized;

CIf there are special manufacturing processes for probing cards, they should be detailed in the order manuscript.

12: Because the card printing media is different, the printed scrap will have some color difference compared to the color shown or printed on the computer;

13: Coloring must be done according to the requirementsCMYKColor book filling, computer screen colors, and printer printing colors cannot be used as printing colors;