When it comes to access control systems, RFID technology is very popular. But, most people don’t realize that there is more than one frequency that can be utilized. In fact, there are three. Let’s take a look at each.
1. Low-Frequency (LF / 125kHz) – Over the past 25 years or so, the majority of access control systems have used the LF frequency. Though LF range carries several standards, the most common is refereed to as PROX. This is typically used solely for building access and tends to be single-function.
2. High-Frequency (HF / 13.56MHz) – This is the most secure frequency that is used and is generally used with contactless smart cards. The technology allows for cards with varying memory capacities. Some even have full microprocessors which allow for enhanced security and encryption. This technology is what is found in ID cards that are used for payment and/or network access.
3. Ultra-High Frequency (UHF / 900MHz) – This frequency can be used at the longest range. LF and HF are typically only readable at a distance of a few inches while the UHF cards are able to be read at a distance of several meters. This would be necessary if the ID card was needed for opening a gate or garage door. This technology is most commonly used for item tracking purposes rather than ID cards.
If you would like more information about using RFID cards for your organization’s access control, give us call! We would love to assist you and answer any questions you may have about our products. Call (866) 610-4308