The TID or Tag Identifier is 20 bytes or 160 bits. Generally speaking, the memory of a tag is split into three: the TID, EPC, and User Memory. The v2.0.1 standard written by EPCglobal covers all RFID requirements for Gen2 RFID tags. School IDs and other cards from commercial access control systems may not work with all RFID readers. Some RFID tags (like the ubiquitous 'HID ProxCard II' brand ID card and some brands of pet tag) use a proprietary format. Information from Wikipedia: Radio-frequency identification Ultra High Frequency (433 MHz, 860-920 MHz) 'Chips/microchips' (in veterinary applications), prox cards, HID cards (both trade names) However, this is finally beginning to change, and multi-read capable readers are becoming much more affordable.Ĭheck out the following chart for a basic break down of the frequencies, and their associated properties. These systems were unattainable for most hobbyists and prototypers. In prior years a reader capable of reading multiple tags was in the thousands of dollars, sometimes tens of thousands. Cost of readers can also vary wildly based the frequency rating of the modules. Some frequencies and systems are designed to only read one tag at a time, while others can read multiple. If you are not sure, welcome to contact our sales experts any time.As well as active and passive systems, RFID systems can also be broken out into different frequencies. You can also click here to learn more about the products that you can use in your project.

Once they are within range of a prox card reader, they will both use radio frequency technology (RFID) to wirelessly open doors.Ĭlick here to learn more about the latest eco-friendly material that we developed for making RFID cards. RFID cards and HID cards are both proximity cards. RFID smart cards are secure because any RFID reader cannot read the data from any smart card. Once it’s on, a wireless communication protocol is initiated and established between the card and the reader for data transfer. The chip in the card is powered on when the card is brought into the electromagnetic field of the reader. The card should be held near the reader as they communicate using radio frequencies through their embedded antennae. RFID induction technology powers the card and is also used for communication between the card and the reader. The chip contains an embedded secure microprocessor, an antenna, and an internal memory. RFID cards store information on a chip embedded in the smart card. The information encoded in the card’s antenna is exchanged with the reader and authenticated when held close to an access card reader. Embedded in an ID card, the ID cards with RFID antennas have small radio receivers that hold the encoded information. The cards are encoded upon printing usually done with a special encoder. HID cards utilize RFID or a special microprocessor embedded into an ID card. To improve privacy and security, 13.56 MHz cards are preferred as they have a more sophisticated encoding. HID cards operate in either 13.56 MHz (high-frequency) or 125 kHz (low-frequency) radio bands. The reader then converts this information into a readable form of data and it will decide whether the cardholder can access the premise or not. The card has an access control identifier, a chip that sends a signal to a card reader via radio waves through its antenna when in range. HID cardĪ majority of HID cards contain an RFID chip and an internal antenna. A smart card is an example of a passive device that doesn’t need charging or batteries. It can remain inactive most of the time and when it approaches an active device, the active device will induce a current through it. A passive device doesn’t need a continuous power source. The chips contain sophisticated circuitry that communicates the data. Both devices have RFID tags that are loops of wire with chips attached. RFID can communicate with chips and distinguish between active and passive devices. RFID is the function that allows devices to communicate with each other through radio waves, allowing them to transmit information back and forth.

The technology behind access cards RFID cardĮvery smart access card is built on RFID. The cards are an easy and secure way to control entry. This card works in conjunction with an access control system to act as a key. For one to be restricted or granted access to different areas in a premise, they should possess an access control card.

RFID and HID cards are more secure than employing several people to man different access points which is often expensive and less secure. In this digitalized era, access control is now easy and fast.

Rfid cards and reader images