FREQUENTLY ASK QUESTIONS ON RFID TAGS AND INLAYS (FAQs): 1. Will one of the systems using one of the frequencies of 13.56 MHz, 915 MHz and 2450 MHz be used in all applications?
• 915 and 2450 MHz are preferred for its longer read distance of 10 feet or more in free space. But each has its limitations. • 915 MHz RFID tags are typically larger with tag area in the range of 2-inch by 3-inch and thus making them not suitable for smaller items. • Both 915 and 2450 MHz are higher in frequency with deleterious effect when placed against water or liquids with water, or even substrates with excessive water or moisture. • Both 915 and 2450 MHz are negatively affected by falling rain and snow and limit their usefulness for applications with high probability of outside exposure. • UHF and Microwave frequencies may also cause user health concerns. • 13.56 MHz RFID tags can be engineered for any size larger than 0.5 inch. It is not sensitive to moisture, water and snow. • 13.56 MHz RFID tags has maximum read distance of 5-foot. It requires more elaborate effort to tag and track larger boxes. • It is unlikely that one of the technologies based on anyone of the frequencies c
