What is RFID? – A Quick Guide to Contactless Card Technology
RFID, or Radio Frequency Identification, is a smart, contactless technology that uses radio waves to communicate between a card and a reader. It enables fast and secure user identification – without any physical contact.
How RFID Works in Access Control Systems
In most RFID solutions, the reader acts as a transmitter, for example in a door access system. It continuously emits radio signals at a fixed frequency. When a compatible RFID card comes near, the signal matches with the chip built into the card – allowing the system to instantly identify the user. Simple, secure, and efficient.
Common RFID Technologies on the Market
In the Scandinavian market, two RFID technologies are especially common:
MIFARE – operates on a high frequency (13.56 MHz) and is often used in modern access control systems and public transport.
EM (Electro Marine) – uses a lower frequency (125 kHz) and is popular in simpler access solutions.
In general, the higher the frequency, the closer and faster the radio waves communicate between card and reader – allowing quicker and more precise interaction.
RFID – The Smart Choice for Modern Access
Whether you're looking for a solution for offices, events, or industrial environments, RFID is a smart choice. The contactless technology offers enhanced security, reduced wear and tear, and a faster user experience. At CardKeep, you'll find RFID cards, tags, and accessories compatible with both new and existing systems – always with high quality and fast delivery.
