RFID Passive
Passive tags completely rely on received power to power up. The read range of these tags is usually below 5 meters. These tags are commonly used in the supply chain namely for tracking of consumer goods for inventories, assets, shipments and deliveries; asset management and access control. Frequency bandwidth : 125kHz, 13.56MHz, 860 – 960 MHz
Passive UHF
(860 – 960 MHz)Passive HF
(13.56MHz)Passive LF
(120kHz-140kHz)
Read Distance : Read Distance : Read Distance :
Can easily read several yards and, in a perfect environment, 30 or 40 feet and beyond. Because a typical dock door is ten twelve feet across.
Can move out to several inches — around a foot with good planning. Reads at very close range, just beyond actual contact
Application: Application: Application:
Supply chain, asset management and access control for vehicles. UHF has challenges with direct contact on liquids and metals because the frequency is easily reflected and absorbed. Many items in close proximity, like pharmaceuticals on a shelf, access controls and smart cards. HF works well on liquid medicine vials and similar products.
Access Control and Payment Technologies. Usually not used for tagging objects
