What is the "RFID Cards"?
RFID (Radio Frequency Identification) cards are made up of a microchip and antenna. They transmit data wirelessly via radio_freq_emi through the antenna to an RFID reader, which then transmits this information to a digital system for processing. RFID cards are classified into three broad categories 125Khz Low-frequency (LF), 13.56mhz High-frequency (HF), and UHF (Ultra High Frequency) 860-960Mhz.
RFID cards use wireless technology to communicate with other devices such as access control systems, payment terminals, and inventory management systems. These cards have replaced the traditional magnet stripe cards and barcodes in recent years, as RFID technology enables faster and more secure identification.
125Khz LF cards operate at a low frequency and communicate with readers within a range of about a few inches or a maximum of about one foot. They are considered ideal for small-scale applications like access control systems, time attendance records, or parking lot entry/exit.
13.56Mhz HF cards operate at high frequencies and have a considerably longer range than LF cards, typically up to several meters. They are used more commonly for payment systems, transportation cards, and identity documents like passports or employee badges.
UHF 860-960 MHz cards have the longest read range as compared to LF and HF cards. They can be read from several meters of distance and are useful in applications where long-range reading is required. UHF RFID cards are widely used to track items in inventory management or supply chain processes.
In conclusion, due to the advantages of their wireless communication, ease of use, personalization, over the past decade, RFID cards have seen a significant surge in their adoption by businesses, governments, healthcare, and financial institutions.