When it comes to building security, perhaps one of the most important aspects is controlling access to the building itself. While security cameras are great tools, the truth of the matter is that they can only do so much. There will come a time where you need to utilize a special system in order to lock and unlock doors whenever people need to enter or exit a building. One of the most popular options for this is a key card entry system, as these are considered to be extremely popular forms of access control for buildings.
Here are three popular types of key card entry systems.
*First and foremost, one of the most popular types of key card entry systems is the swipe card system, which is designed to use the exact same technology that can be found in a traditional credit card thanks to the magnetic stripe it has. When these cards are swiped, the magnets in the stripe create different amounts of voltage that will measure the total changing voltage before then converting it to a binary credential that will unlock access to a certain location.
*Another popular type of key card entry system is the smart card system, which uses Near-Field Communication in order to transmit data. Oftentimes, these are seen in contactless payment systems. While positive induction is still used for power with this system, smart cards feature additional storage capacity than 125kHz cards, meaning that they can encrypt data on top of storing it.
*One other popular type of key card entry system is the prox card system, which is also known to utilize RFID cards. These cards are designed to use a low frequency to communicate with the reader itself. The card is able to be powered actively by a small lithium battery, as well as passively powered by the reader itself.
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