RFID Prox Cards


Secure Access Control. SYNOCARD proximity cards are perfect for RFID access control applications at your office, building, school, campus, clubhouse, or warehouse.

Endless Access Control Applications. Open doors, RFID lockers, locked drawers and secure cabinets. Use our prox cards with an RFID time clock to check on staff attendance. Secure, high quality and low cost.

Need Some Help? Please contact us for a free consultation or pricing.

RFID Prox Cards

Use our RFID proximity cards for access control applications at the office, at a school, private club or at an office building. Our proximity cards are available in 125 kHz and include both standard PVC cards and clamshell cards. Get them printed with special features or leave them blank and print them at site, our RFID proximity cards give you secure access control at factory direct prices.

Need to cut your costs on HID prox cards? See our full selection here.

FAQ: About RFID Proximity Cards

FAQ: RFID Proximity Cards

Below is some information to help you understand RFID proximity cards:

How do RFID Proximity Cards Work?

Proximity cards are also called prox cards. They use a 125 kHz frequency to transmit a signal to a door access reader once the card is placed in proximity to the reader. When the card is placed on the reader, the card’s unique strand of numbers is passed to the access control panel, verifying if the number matches an approved card number (CSN) in the internal database.

What is the Difference Between a Proximity Card and a Smart Card?

Proximity Cards only store the facility code of the building or facility that the card should access and a card number. Smart cards are cable of storing this same information with the added ability to authenticate and store biographical information of the user.

What is 26-bit Wiegand?
26-bit is the industry standard for access control, representing an open encoding format. The data encoded using 26-bit format consists of 255 possible facility codes and within each there is a total of 65,535 unique card numbers. This is a relatively small number of unique cards, so additional authentication is often used.
How do I Know What Kind of Prox card I Have?  

Take a look for this information on the front or back of the proximity card you are using. There are many manufacturers of prox cards but each card should contain physical markings printed on the actual card itself.

Those markings will help you to determine the following:

  • The card manufacturer
  • The card format
  • The site and facility code
  • The card ID range number

If this information is not found on the card, you can also look at the label on the box of where your cards are stored or on the invoice from the card supplier.

Need more information? Please contact us today for a free consultation and prices!

Our Most Popular Proximity RFID Cards

SYNOCARD is a Leader in RFID Prox Cards

We are a leading supplier of prox cards. Customer satisfaction comes from our high quality products and excellent customer service and support. Please contact us so that we can offer a free consultation and help you to make your project successful.

Factory Direct Prices

Low prices that reduce your overall project spend and keep you on budget.

Fast & Responsive Service

Supportive service and product guidance so that you look like the office pro.

Short Lead-times

We get it done and shipped quickly so that you can get things done quickly too.

Need some help? Contact us for a free consultation or pricing.


Contact Us