Proximity card types, often called “prox cards,” are a type of contactless smart card used primarily for access control. They use radio-frequency identification (RFID) technology to communicate with a reader, allowing for wireless data transfer. Here’s a breakdown of the common types and characteristics:
Key Characteristics:
- Frequency:
- Most common proximity cards operate at a low frequency of 125 kHz.
- However, there are also Ultra-High Frequency (UHF) proximity cards, which operate at higher frequencies.
- Passive Technology:
- Most proximity cards are passive, meaning they don’t have an internal power source. They draw power from the reader’s radio waves.
- Read Range:
- Typically, 125 kHz proximity cards have a short read range, usually a few inches. UHF cards, on the other hand, can have a much longer read range.
Types of Proximity Cards:
- Standard PVC Cards:
- These are the most common type, made from durable PVC and the same size as a standard credit card (CR80).
- Clamshell Cards:
- These are thicker and more rigid than standard PVC cards. They are often used in rugged environments.
- Magnetic Stripe Proximity Cards (DuoProx):
- These cards combine proximity technology with a magnetic stripe, allowing for multiple uses, such as access control and payment.
- Key Fobs:
- These are small, keychain-sized proximity devices.
- Adhesive Tags:
- These are small, adhesive-backed tags that can be attached to existing ID cards or other objects.
Key Considerations:
- Card Format:
- Proximity cards come in various formats, which dictate how the data is organized. It’s essential to match the card format to the reader.
- Facility Code:
- A facility code is a unique identifier that distinguishes cards from different locations or organizations.
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Card Number Range:
- Each card has a unique card number within the facility code.
Common Uses:
- Access Control:
- Securing entry to buildings, offices, and restricted areas.
- Time and Attendance:
- Tracking employee work hours.
- What is a proximity card? A proximity card or prox card also known as a key card or keycard is a contactless smart card. It can be read without inserting it into a reader device, as earlier magnetic stripe cards such as credit cards and contact type smart cards. The proximity cards are part of the contactless card technologies.