RFID Access Control Systems Keep Track of Everyone's Movements
RFID is more convenient for tenants and property owners than traditional access control methods, such as magnetic stripes and barcodes. By using radio frequency waves to transfer data, RFID technology can identify and read objects and enter the data into an integrated system without human intervention, eliminating the risk of error and enabling speedy processes. Whether it's used for a parking lot control system or access to sensitive areas and specialized equipment, an RFID access control system allows you to keep track of everyone's movements.
RFID stands for radio-frequency identification, a form of Automatic Identification and Data Capture (AIDC). The technology uses radio waves to transmit data between an electronic tag attached to an object—such as a key card or fob—and an RFID reader. This information can be recorded, stored, and analyzed, providing valuable insight into employee or tenant activity. RFID access control systems can also be combined with other ID verification technologies, such as NFC or BLE, to allow mobile devices to act as entry credentials.
RFID card access is simple: a person or asset approaches an RFID reader with their card or fob, which has an embedded microchip. The RFID reader emits a radio wave that energizes the chip, causing it to send back a string of identifying data—usually an encrypted key code—to the tag reader. This data is then decoded by the reader and sent to an access control panel. The access control system will grant access if the key code matches a valid one.
There are many different types of RFID technology, each with pros and cons. For example, in a lower frequency system, RFID access cards may operate better near liquids or metals than in a higher frequency system but have a slower data transmission rate and limited range. A more advanced approach can use multiple frequencies to achieve a broader range of coverage, but this increases the risk of interference from other sources.
Passive tags are the most popular choice, requiring only a reader to be energized and transmitting a code once the card is within range. An active tag has its power supply, meaning it can send a code at any time—even when the tag is not close to the reader.
Another benefit of an RFID system is its bidirectional communication. This feature is useful when paired with an NFC or BLE reader, allowing users to log in by simply holding their phone up to the reader instead of providing a password or PIN. It's an excellent solution for companies with remote workers and those with strict security requirements since the bidirectional nature of this technology makes it difficult for an intruder to copy or spoof your access card RFID.
A final benefit is its ease of integration with other existing systems. For instance, waste management services often need to weigh vehicles on industrial scales, and the ability of an RFID system to seamlessly integrate with these systems allows them to perform both tasks in a single step; this helps to reduce costs and increase efficiency.