RFID: A technology dating back to World War II

By Alison Job for Osiris Technical SystemsTo understand why RFID installations sometimes fail or don’t perform as expected, it’s important to understand the technology itself. We asked Stef du Plessis, a director at, to provide an overview of RFID technology and its widespread use across various industries.

Arguably the most well-known example of RFID implementation in retail is from Walmart in the USA, whose deployment of RFID spurred other retailers to adopt the technology. RFID requires as a minimum a tag, a reader and a system to make sense of the data. Low frequency has been around a long time and is primarily used for access control and animal tracking. The reading range is between one and two metres. High frequency is also fairly common, used for near-field communication tags. Applications include access control, bank cards, etc. Here the reading range is between two and 10 centimetres. Ultra-high frequency is specifically designed to speed up logistics and make sure it works better.

Each tag has a unique ID and an electronic product code that is typically programmed according to the requirements. This identifies the tag and the item to which it is attached. Some tags have additional user memory that can be programmed by the manufacturer for warranty or maintenance purposes, or just to record information about the tagged item. Finally, there’s a part of the memory used for access codes or passwords required to rewrite the technology or access the memory.

Source: Tech Daily Report (techdailyreport.net)

World War II Stef Du Plessis Osiris Radio Frequency Identification Osiris Technical Systems Walmart RF Field

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