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Technology: RFID technology uses RF waves to read and transfer data. In fact, all key cards other than Wiegand and Magstripe use RFID technology to transfer data to the reader, but they have different working mechanisms. RFID cards have many variants, especially when it comes to key card entry systems. RFID stands for “radio frequency identification.” Data is stored in a microchip often referred to as an RFID tag. Key cards can be divided into different types depending on the technology they use to store data and communicate with the reader.

Access is granted by remotely unlocking the door when there’s a positive match or restricted when there’s no match.

The controller compares the received credentials with its database and sends a signal to the electronic lock depending upon the match type.

The reader reads the code when the key card is swiped or placed close to it and sends the data to a controller.

The data may be stored and transmitted over a Wiegand wire, an RFID microchip, or a magnetic stripe.

The key card stores digital credentials in the form of an electronic code.

A token (such as a plastic key card or fob) is presented to an electronic access control device called a reader.

All key cards work through the same basic principle. The purpose is the same: to manage access to a particular area. When you go to a hotel, there is a good chance you will swipe a magnetic stripe card to get into your room.

Others may have a key card with your picture on it to get into your office building. As such, so have key card access control systems as a whole.įor example, some of you may use a fob to get into your parking garage. Keys, throughout their technological evolution, have taken many forms. Use this guide to understand access card formats, their pros and cons, and evaluate your key card system needs. Swiftlane, a provider of modern, cloud-based access control systems, has put together a guide to access card technologies that exist today.

In this article, you will get a complete overview of key card entry systems, and key card formats.