D.O RFID TAG company
D.O RFID TAG company is a RFID card manufacturers & factory, professional RFID card manufacturers , NFC tags suppliers and RFID Wristband company in shenzhen china for 15 years — Source Quality Products and Enjoy Efficient Service.


What are  RFID cards ?

RFID Cards have found many applications not only in the finance and payments industry but also in identity management, access control, logistics, healthcare, transportation, mobile communication, etc.  RFID Card contains an embedded RFID chip (integrated circuit) which makes it possible for it to store data and/or house a programmable microcontroller.

Radio Frequency Identification (RFID) is the wireless non-contact use of radio frequency waves to transfer data. RFID (radio-frequency identification)  cards are cards that don’t require direct contact with the corresponding RFID reader for data exchange.  The data transmission in contactless RFID technology works via radio waves in the LF, HF or UHF range and is transmitted via a coil antenna in the card. This RFID antenna is also used in addition to the data transfer for energy supply of the RFID chip. The radio signal of the reader sends enough energy through the antenna so that the RFID chip can be powered. The RFID card thickness is here usually 0.80mm to 0.9mm. Unlike the contact smart card, the format is not limited to the ISO ID-1 format (86 x 54 mm), and can have other form factors.

How does a RFID card work

Radio Frequency Identification (RFID) technology is used in many contactless smart RFID cards. RFID  Cards store information on a RFID chip embedded in the RFID card. The RFID chip contains an embedded secure microprocessor or equivalent intelligence and internal memory. An RFID antenna is also embedded in the plastic body of the card. RFID induction technology is used for communication between the RFID card and the RFID reader and also powers the smart card. The RFID technology used in this case works over a short range of fewer than 4 inches. As such, the card should be held near to the reader. Both the card and the reader communicate using radio frequencies via their embedded antennae.

When the card is brought into the electromagnetic field of the reader, the chip in the card is powered on. Once the chip is powered on, a wireless communication protocol is initiated and established between the card and the reader for data transfer.

RFID  cards are secure because any RFID reader cannot read the data from any RFID smart card. The RFID reader application would be required to have the secret keys that are used for encrypting data in the card. The RFID card might block any attempt to access data on the chip if the encryption keys do not match. Similarly, communication between the RFID card and the RFID reader can also be encrypted. The level of security can be decided based on the application where it is used. Data can only be written into the smart card memory by someone who has the authority and knows the keys to the card.

RFID card price

Not only does the technology continue to improve year over year, but the cost of implementing and using an RFID system continues to decrease, making RFID more cost-effective and efficient.RFID smart cards are made in millions and cost per card may vary between 7 to 15 cents.

As such they are considered low cost. They also offer an easy to use and secure mode of communication for identification. RFID smart cards are commonly used in applications which require protection of personal information and fast, secure transactions. Examples include identity cards, fare payment cards, credit/debit cards, etc.But different RFID cards with differernt price. As they are in the different RFID chip and different surface technology.

Custom RFID card

There are Three basic types of RFID cards:

125 khz RFID card :

The low frequency band covers frequencies from 30 KHz to 300 KHz, where LF RFID systems operate normally at 125 KHz, also there are some that operate at 134 KHz. This frequency band provides a short read range of up to 10 cm, with slower read speed compare with higher frequencies. LF RFID is not very sensitive to radio wave interference. Applications for LF RFID include access control and livestock tracking.

125Khz RFID card application:

• ID cards

• Building Access cards

• Gate Access cards

13.56Mhz RFID card :

The HF 13.56Mhz band ranges from 3 to 30 MHz, where typically HF RFID systems operate at 13.56 MHz with read ranges between 10 cm to 1 meter. HF 13.56mhz RFID systems experience moderate sensitivity to interference. HF RFID applications include ticketing, payment, and data transfer applications.13.56mhz is also including NFC Card. NFC (Near Field Communication) as known as a short-range wireless technology, is a set of communication protocols that enable simple and safe two-way interactions between electronic devices

13.56Mhz RFID card application:

• New debit and credit cards

• Passports

• Public Transportation cards

• Hotel keys

• New ID and access cards

• US Government Employee ID Cards

• Military CAC Cards

• TWIC Cards

860-960 Mhz frequency UHF  card :The UHF frequency band covers the range from 300 MHz to 3 GHz, where UHF RFID systems comply with the global, universally adopted UHF Gen2 standard typically use the 860 to 960 MHz band. Application of UHF technology spans many markets; including retail, healthcare, life science, pharmaceutical, anti-counterfeiting, transportation, and manufacturing.

UHF card

• Enhanced Drivers Licences

• E-Passports

• Passport Cards

Why Choose us

DO RFID  group is a large rfid card supplier.

We have the most complete RFID IC storage with enhanced production facilities. Our ability of large purchases is the basis for being able to provide a competitive price.

Are you looking for the right type of RFID tag supplier? Or needing a solution to integrate customized RFID into your product or current system? Feel free to contact us today and one of our sales engineers will reach you to assist.

RFID Products