What is a Proximity Card?

A proximity card is a small, plastic card embedded with an electronic chip or magnetic strip. These cards are used for contactless access control, allowing individuals to gain entry to secure areas by simply passing the card near a reader.

What is a Proximity Card? and How Proximity Cards Work

Proximity cards utilize various technologies, such as:

• Radio Frequency Identification (RFID): This is the most common technology. RFID cards contain an integrated circuit (IC) chip that emits a unique radio frequency signal when brought near a reader.
• Magnetic Stripe: These cards have a magnetic stripe on their surface, similar to those found on credit cards. The magnetic stripe contains encoded information that is read by a magnetic stripe reader.

When a proximity card is presented to a reader, the reader captures the card's unique identifier. This identifier is then compared to an authorized access list stored in the system. If the card is authorized, the system grants access.

Benefits of Using Proximity Cards

• Convenience: Proximity cards offer unparalleled convenience. Users simply need to wave the card near the reader, eliminating the need for fumbling with keys or entering passwords.
• Enhanced Security: Compared to traditional keys, proximity cards are more difficult to duplicate or steal.
• Increased Control: Access control systems using proximity cards provide granular control over who can access specific areas and when.
• Improved Audit Trails: Proximity card systems can track and record access events, providing valuable audit trails for security and administrative purposes.
• Versatility: Proximity cards can be used for various applications beyond access control, such as time and attendance tracking, cashless payments, and loyalty programs.

Types of Proximity Cards

• Low-Frequency (LF) Cards: These cards operate at lower frequencies and have a shorter read range.
• High-Frequency (HF) Cards: These cards offer a longer read range and higher data capacity.
• Ultra-High Frequency (UHF) Cards: These cards have the longest read range and are commonly used in supply chain management and inventory tracking.

Applications of Proximity Cards

• Access Control: The most common application, used in offices, residential buildings, and gated communities.
• Time and Attendance Tracking: Employees can use proximity cards to clock in and out of work.
• Cashless Payments: Proximity cards can be used for contactless payments at stores and vending machines.
• Public Transportation: Many public transportation systems utilize proximity cards for fare collection.
• Event Ticketing: Proximity cards can be used as event tickets for concerts, sporting events, and other gatherings.