Radio Frequency Identification. An RFID tag is a device that can be
applied to an object for the purpose of identification and tracking
using radio waves. Most RFID tags contain two parts: an integrated circuit
for storing and processing information, and an antenna for transmitting
the signal. In general, there are two types of RFID tags: passive RFID
tags and active RFID tags.
is the difference between passive and active RFID?
Passive tags do not have internal power; they are activated by the electromagnetic
field generated by the reader, and transmit information back to the
reader. Passive tags have practical read distances ranging from about
10 cm, up to a few meters. Active tags have an on-board power source,
such as a coin cell battery, and a microprocessor for performing special
tasks. Active tag data transmissions have a much longer range than passive
tags; an active RFID reader can monitor populations of active tags at
distances up to 100 meters.
are the advantages of passive RFID?
If assets are tagged using passive technology, a physical audit can
be completed about 4 times faster than a barcode audit. The Auditor
can carry a passive RFID reader that does not require line-of-sight
between the label and the reader – all that is required is physical
proximity. The Auditor still needs to visit each physical location of
each tagged asset, but the data collection process is automatic with
low error rates.
are the advantages of active RFID?
Once an object is tagged using active RFID technology, the need for
routine physical audits is practically eliminated. Active RFID tracking
solutions enable automated, real-time, on-demand physical asset inventory
for compliance, business and security needs. Readers can be permanently
installed in strategic locations (e.g., offices, storage rooms, high
traffic areas, exits) to report the presence and status of all tagged
assets within defined areas.
do customers use passive RFID?
The most common use of passive RFID is in retail supply chains, to improve
inventory tracking and management. Passive RFID tags serve as an “enhanced
barcode”, (printed barcodes can smear, tear, or deteriorate over time,
and require line-of-sight between the reader and the barcode). The lack
of an onboard power supply means that the passive tag can be quite small
and inexpensive; commercially available passive tags can be embedded
in a sticker label.
do customers use active RFID?
Active RFID systems utilize “beacon” tags that periodically broadcast
their status. These tag transmissions are processed in real-time to
immediately and continuously identify tagged assets. If real-time asset
tracking over an extensive area is needed, active RFID solutions are
superior to passive solutions. Active technology makes sense for managing
critical assets, IT equipment, expensive items, mobile and shared resources.
do active RFID tags provide asset awareness?
are encoded 'license plate' IDs communicated through a series of RF
pulses; the pulses themselves represent cryptic alphanumeric codes with
no inherent meaning. Readers decode and report the tag IDs along with
their related status payloads (e.g., motion, temperature, tamper) for
all tags operating within their coverage zones. This information becomes
useful through the system software, where the tag-to-asset association
is made. Tag ID messages let the system know where the asset is physically
located; the tag status payloads provide asset awareness for operational
is RF Code’s active technology different from WiFi-based active technologies?
RF Code product offerings are competitively positioned in
terms of system scaling and overall costs. RF Code systems operate at
433.92 MHz; the tags are one-way, transmit-only communicators; the readers
are dedicated to monitoring for RFC tag transmissions. WiFi-based tags
are generally more expensive, physically larger, and require more power
(shorter battery life). WiFi systems may have greater deployment costs
due to the requirements for a high density of WiFi access points. WiFi
systems utilize the 2.4 GHz band which can get “crowded”, particularly
when there are many tagged assets in a confined area.
Do I need to use RF Code software with RF Code hardware?
RF Code is the only active RFID provider that offers fully-open access
to readers and software. Link directly to the readers (open API), or
select the software interface layer(s) that meet your system needs.
Engage one of our partners to develop a totally customized solution,
or develop on top of our Zone Manager or Asset Manager platforms.
Does active RFID save you money? If so, how?
With RF Code’s active RFID system, physical asset inventories are kept
in real-time to quickly locate and identify key assets. This eliminates
the need for error-prone and expensive manual inventory processes. This
improves corporate governance, regulatory compliance, asset and data
security. For example, you can easily locate tagged assets for break/fix
service and end-of-lease returns. Automated alerts and reports can be
configured for immediate notification of asset location or condition
changes, delivering cost- and time-saving benefits.
RF Code have an active RFID solution for my data center?
RF Code is the only active RFID vendor with a complete product
line targeted for IT Assets and Data Centers that delivers 100% accurate
inventory, all the time. The system provides instant change notification
for asset movement, door opening, tamper detection, temperature and
humidity changes. Active RFID technology enables location tracking at
the zone-level for distributed IT assets in buildings and rack-level
precision for IT assets in data center.