What is the Technology Behind Proximity Cards and How Do They Work

1. What is the Technology Behind Proximity Cards and How Do They Work? In today’s advanced world, where security and convenience are paramount, Proximity Cards have emerged as a cornerstone in access control systems. These cards are not just tools for opening doors; they represent a sophisticated blend of radio frequency technology and digital encryption. Here, we explore the technology behind these cards, focusing on their common types, and how they work to provide secure access. What are Proximity Cards? Also referred to as prox cards, they are contactless integrated circuit cards that provide secure access to buildings and areas within them. They are part of an access control system that includes a card reader, a door lock mechanism, and a central access control panel. Unlike magnetic stripe cards that must physically touch the reader, they only need to be held within a few inches of the reader to be activated. Technology That Powers These Cards The technology that powers these cards is primarily based on Radio Frequency Identification (RFID) technology. Each card contains a small RFID chip and an antenna coil embedded within the plastic card. This chip is capable of transmitting data via radio waves to a nearby card reader. The core frequencies used in these

2. systems are typically low frequency (LF), with 125 kHz Proximity Cards being among the most common. Read More Articles: 4 Benefits Of Hiring A Professional Excavation Contractor In Texas RFID Technology RFID is a form of wireless communication that uses electromagnetic fields to automatically identify and track tags attached to objects. In the case of prox cards, the RFID tags are passive, meaning they do not have their power source. Instead, they are powered by the electromagnetic field produced by the card reader. When a proximity card enters the reader's field, the coil within the card harvests energy from the field to power the chip, which then modulates the energy to send back its data to the reader. Data Encoding and Transmission They commonly use a data format known as 26 Bit Proximity Cards format. This format encodes data into 26 bits whereby each card is given a unique card code and facility code. The facility code is used to identify the set of doors that a card can open, which is crucial for systems where different groups or departments may have different access privileges. When the card is swiped near a reader, the reader decodes the information transmitted by the card’s RFID chip and sends it to the control panel. The control panel then checks the validity of the data against its database. If the data matches an authorized entry, the panel sends a signal to unlock the door. How Do They Work? Let's get into their operational specifics: 1. Activation: As the card comes into the range of a reader, the electromagnetic field from the reader induces a current in the card’s coil, powering up the RFID chip. 2. Data Transmission: The powered chip then uses its pre-programmed information to modulate the field and send a signal back to the reader. This modulation can be thought of as the card “talking back” to the reader. 3. Signal Processing: The reader captures this modulated signal and converts it into digital data. 4. Verification: This data is then relayed to the control panel, which compares it against the access control list.

3. 5. Access Granted or Denied: If the data matches an authorized access entry, the door unlocks; otherwise, access is denied. Advantages ● Increased Speed: Compared to traditional key-based entry, these cards allow for faster access. This is particularly beneficial in high-traffic areas like office buildings, schools, or transportation hubs, as it reduces bottlenecks and keeps things moving smoothly. ● Multi-Purpose Functionality: They can be programmed for various uses. A single card can unlock doors, pay for fares, log into computers, and even track attendance, streamlining everyday tasks and eliminating the need for multiple cards. ● Tougher to Duplicate: Unlike keys, which can be easily copied, these cards are programmed with unique identification codes. These codes are difficult to replicate, making unauthorized access significantly less likely. ● Enhanced Tracking and Auditing: These systems can track who accessed a specific location and at what time. This detailed audit trail provides valuable information for security purposes and can help identify potential security breaches. ● Reduced Risk of Loss or Theft: Lost keys can be a major security concern. Because these cards are often attached to lanyards or keychains, they're less likely to be misplaced. Additionally, compromised cards can be easily deactivated, preventing unauthorized access. ● Scalability and Flexibility: Proximity card systems can be easily scaled to accommodate growing organizations or changing access needs. New cards can be programmed quickly, and access permissions can be modified as necessary. Read More Articles: 4 Benefits Of Hiring A Professional Excavation Contractor In Texas Conclusion The seamless integration of RFID technology within these cards has revolutionized how institutions manage access control. These cards offer a secure, convenient, and flexible solution that meets the modern demands of access management. To get the best Proximity Cards, get in touch with our team at Bristol ID Technologies! Site Article: What is the Technology Behind Proximity Cards and How Do They Work