Treshna supplies RFID tags, cards and readers for the New Zealand market.

We supply RFID products and software for a variety of industries, and can custom-make a solution to meet your needs.

We provide RFID for access control, ticketing, concessions, point of sale and inventory management, concentrating on recreation and manufacturing industries.

We supply long-range and short-range RFID cards, readers, scanners, gates and turnstiles, along with ticketing & printing machines for issuing RFID cards. We will custom-make a solution to meet your needs.

RFID stands for Radio Frequency Identification Device and there are several different standards available. We use the Mifare standard (ISO 14443) for short-distance, Vicinity standard (ISO 15693) for medium-distance and EPC Gen 2 standard (ISO 18000) for long-distance uses.

RFID cards and key fobs come in a variety of shapes and sizes to suit your needs. We can supply you with small and large quantities of cards, keyfobs, and readers.

RFID Standards

Mifare (ISO 14443)

Mifare Ultralight is by far the cheapest RFID standard to date. It is commonly used for disposable tickets but can also be used for short distance reading for access control, identification cards, or any other form of ticketing. (We can also supply Mifare Classic options).

The Ultralight cards allow storage of up to 512 bits of unencrypted data (Encrypted standards of Mifare cards are also available.) The information can be stored on an RFID card that is similar in size to a credit card, an RFID keytag or be embedded in stickers and cardboard for inventory tracking.

Mifare RFID readers are small and can be placed on any desktop or wall. The reading range for the Mifare card is limited to 5-7cm, so close contact is a requirement.

Mifare is the standard we use with our Gym Master software to provide membership cards and gym access controls. It is the easiest and cheapest RFID standard to implement but is limited by its reading range.

Vicinity Cards (ISO 15693)

Vicinity RFID cards are very similar to that of Mifare RFID but the standard allows for more flexibility, as the RFID can be read from further away, and cards and keyfobs can be more durable.

Vicinity RFID readers allow reading distances of up to 1.2 metres – similar to that used in store security to prevent people stealing items. The cards or key fobs come in a variety of shapes and sizes including those that are waterproof and durable in harsh conditions – like a ski field where skiers and instructors use RFID cards or keytags to get access to lifts.

EPC Gen 2 (ISO 18000)

EPC Gen 2 is the latest standard for long-distance reading. It has a reading and writing range of up to 10 metres under optimum conditions. The readers come with external antennas to increase the reading distance. The cards can either be active, which have their own power supply for extended range, or passive traditional ones which do not have their own power supply. Both active and passive cards are encrypted for security. The EPC Gen 2 RFID cards, like Mifare RFID, can come in a variety of shapes and sizes, and can also be embedded in stickers and cardboard.

EPC Gen 2 is often used for inventory tracking and non-contact access controls. Because of its long-distance capabilities, items with a RFID tag are able to pass through a “door” with antennas on each side and the reader will be able to identify the RFID tag without contact. The same principle can be used to track people, stock, or items of any shape and size every time they pass by a reader.

RFID Equipment

RFID Readers

The RFID reader is the equipment that identifies the presence of an RFID tag. Some readers can process the data onboard, but most just pass the RFID information to a central computer. Readers are often located on a desk or a wall.

Readers may be designed for either indoor or outdoor use weather proof. Hand held RFID readers with wireless capabilities are also available and some readers can use external antennae for increased reading or writing range, most commonly found with for the EPC Gen 2 RFID standard.

RFID Cards and KeyTags

RFID cards come in different shapes and sizes depending on their intended use. Traditional credit-card size cards are the most common and popular. These cards can be custom printed with pictures and/or text. We can supply cards pre-printed at the factory, or you can print them yourself if you have the right printer. The RFID device can come in many forms including key fobs, coins, stickers, cards, some of which are waterproof RFID devices.


RFID printers have two functions. First, they print pictures, names or barcodes on to the card or sticker. Second, they encode data onto the RFID device itself. All RFID printers we supply perform both functions.

Each standard has its own type of printer. RFID printers come in a variety of shapes, sizes, and prices. The printers are easy to operate and work in a similar fashion to ordinary printers. Having your own RFID Printer is useful if you want to print your own identification cards – perhaps with an ID photo or picture, to change the information stored on a card, or to track inventory by creating RFID stickers which are affixed to products.

For more information on how RFID can improve your business, pricing or quotes please contact our sales team at or phone us on +64 3 366 3649