passive rfid tags

Introduction

An RFID system is a wireless method to identify and track tags. These tags can be mounted on goods, products that are of costly nature, on humans and animals, and similar other moving objects. In animals and humans, tags can be embedded under the skin. RFID tags are known as being ‘non-contact’ and ‘non-line-of-sight’ as they don’t require you to swipe any card for identification.

A Passive RFID tag is a tag that does not include a battery unlike Active RFID tags; here the reader supplies the power. They operate by using the power from the RFID transceiver. The absence of an onboard power supply implies that the device is quite small. One can find commercially obtainable products that can be implanted under the skin. The smallest of these devices that have been experiential are measured to be 0.15 mm × 0.15 mm, and are said to be slender than a normal sheet of paper (at approximately 7.5 micrometers).