Active vs Passive Rfid

Active vs Passive Rfid: What Are the Differences?

by Daily Banner

Have you ever wondered what the difference is between active vs passive RFID? Getting the wrong type of RFID can demean the efficiency of your whole system. So make sure you know what’s the best option for you.

RFID stands for radio-frequency identification. It’s a way businesses can track and log human movements. There are two types: active and passive. Each operates differently and has different uses.

So, what’s the difference? Why are users choosing one over the other? Is your business going to benefit from either? Let’s get the answers.

What is Active RFID?

Active RFID is a type of data communication technology that uses a transmitter and receiver to track, locate, or monitor objects in the physical world.

It uses short-range radio waves to identify and track items out of eyesight and even in the toughest environmental conditions.

Active RFID technology differs because it uses an on-board battery to create a localized network and publish data and information about the tagged object.

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What is Passive RFID?

Passive RFID technology is a form of identification that uses radio frequency (RF) waves to identify objects. Passive RFID tags do not require any form of external power to operate, instead relying on the power from the reader device.

As it passes the reader field, a unique identifier from the tag encoded in its chip is read. 

Differences in Practical Applications 

Active and passive RFID refers to two types of RFID tags used in RFID time clock systems. Active RFID is an active transmission device that requires an integrated power source and will actively send out a signal.

Passive RFID does not require a power source, as it captures existing energy from the reader. Due to their energy source, active systems have a longer read range and can be used outdoors in nearly any environment.

Passive systems are used in nearly all indoor applications due to their limited range and inability to be used outdoors. Practically, the main difference between active and passive RFID systems is the ability to provide real-time location information.

Active RFID provides the most accurate location information by showing the location of each item and sensor at any given time. Passive RFID systems provide approximate location information, which the last RFID reader determines to read the tag.

Differences in Cost Comparison of Active vs Passive RFID

The difference in cost between these two technologies is significant and can impact the type of system a business should purchase.

Passive RFID is significantly less costly than active RFID due to the lack of electronics and functions associated with this type of system. As a result, passive RFID products can be purchased at a fraction of the cost of active RFID products.

Choose The Right RFID for Your Needs

In conclusion, active vs passive RFID technologies have their strengths and weaknesses in cost, range, and battery life. To decide the correct way to go with your tracking project, weigh the costs and benefits of your given situation and choose the most appropriate option. 

Check back to our blog to get more helpful tips and tricks soon!

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