MIFARE 1K was originally designed with 4 byte unique identity code, also called UID code, if we keep each chip code unique, there are only 4.2 billion codes in total. But as MIFARE 1K has been so popular and widely used, this capacity is obviously not enough to satisfying the continuously growing demand. So the MIFARE 1K card with 7 byte UID code appeared.
As the MIFARE 1K chip code varies so much, sometimes, the MIFARE 1K cards from different factories is not compatible with all the MIFARE readers in the market, there are two reasons for this phenomenon:
1, the classic 4-byte UID MIFARE 1K cards only need one cascade of anti-collision to select the card, but 7-byte UID MIFARE 1K cards needs two cascades of anti-collision to select the card. The MIFARE card with 4-byte UID doesn’t need the second cascade of anti-collision, if the reader is designed with two cascades of anti-collision, it can cause error.
2, in card authentication stage, it needs 4-byte UID code, 6-byte card password, and 1-byte data to participate in. But the new card has 7-byte UID code, how to decide which 4 bytes to participate in the authentication stage? There are 3 solutions presently, 1), 88h and the first 3 bytes of the UID, 2), the first 4 bytes of the UID, 3, the last 4 bytes of the UID, to participate in the authentication stage.
So, if your reader can not read card with 7 byte UID, you can consider from the above two aspects: whether it needs the second cascade of anti-collision in card selecting step, and which 4 byte participate in the authentication step.
RFID systems can be broken down by the frequency band within which they operate: low frequency, high frequency, and ultra-high frequency. There are also two broad categories of RFID systems-passive and active.Within the UHF Frequency range of 856 – 960 MHz, there are two primary subsets:
a) The FCC (US) standard frequency range of 902-928 MHz
The FCC standard is used throughout North America as well as the majority of the Caribbean and much of South America.
b) The ETSI (EU) standard frequency range of 865-868 MHz
The ETSI standard is used throughout the European Union and most countries adhering to EU standards.
Various other subsets within the above ranges are used throughout the world. If you are planning on deploying RFID Equipment in a particular country, but aren’t sure of that country’s standards, then we can assist in providing the appropriate frequency range.
Near Field Communication (NFC) is a short range communication technology.
NFC operates at 13.56 MHz and can be used to make life more convenient. With NFC technology, users can make transactions, exchange digital content, and connect electronic devices easily.
The NFC Forum defines four types of tags which provide different communication speeds and capabilities in terms of configurability, memory, security, data retention and write endurance.
The products currently considered as compatible NFC Tags are built on top of ICs like Innovision Topaz, NXP Mifare Ultralight / Mifare Ultralight C, SONY Felica Series and NXP Desfire.
In many places, including Ireland, one sector looking for growth influences NFC space. New NFC-enabled debit cards are already being issued once the hardware is available in retail units, these could get to be the primary way of purchasing smaller value items, typically as much as %u20AC15. It is a new technology for small retail businesses but is at their favour as it will decrease the costs of handling cash and really should also increase payments at checkouts. Authentication is generally not essential this also accelerates the payment process. For that reason this technology might be a popular mobile payments model. However, just how well it takes off will likely depend upon the charging model. Consumers covers convenience but also in cash-strapped economic downturn, when the charge is just too high cash it is king.
Many small businesses have traditionally found the overheads of taking card payments prohibitive however, this model provides them entry to card payments and this will have a significant positive effect on their flow. The opportunity to take card payments in any location removes the attachment to customers having cash or cheques. What’s more, it removes the overhead in following up on unpaid invoices, itself a pricey exercise for most small businesses.
Mifare Standard 1k
Mifare Standard 1k tag is based on ISO 14443-A standard. NFC tags are read and re-write capable, and user can toggle read and write permissions using sector keys. Protection can be read only or non-readable without key. The available memory is appr. 768 bytes, organised in 16 sectors. Communication speed is 106 kbit/s.
Mifare Standard 1k is not an NFC Forum mandated tag type. A reason for that is the limited possibility to publish the protection/keys algorithm.
Standard: ISO 14443-A
Chip: Mifare Standard 1k from NXP Philips.
We offer Mifare Standard 1k tags in several formats: indoor labels/stickers, outdoor tags, contactless cards and key fobs.