PJM is speci?¬?ed in the ISI=IEC 18000??“3 Mode 2 standard. It provides a superfast highfrequency
(13.56 MHz) technology. A brief digression into Magellan technology innovations
accepted by the market, particularly the PJM StackTag, will reinforce student
enthusiasm for the potential of RFID:
. Faster data rates than VHF and most UHF technologies in use.
. The PJM ItemTag uses tuned coils, as do most item tags, and requires a signi?¬?cant
separation for individual item identi?¬?cation.
Progress in RFID Education 119
. The proprietary PJM StackTag is designed to read multiple tags, which touch or
are in a stack of some form. Hundreds of tags can theoretically be read, almost
simultaneously.
. Excellent anticollision function due to the use of eight channels offering a notional
data rate of 848 kbits per second.
. High- and low-power modes for RFID tags.
. Patented system using frequency and time division multiple access.
. Memory capacity up to 10 kbit is available using PJM technology, whereas legacy
RFID systems are typically limited to 512 bits.
Implementation of RFID systems may require project management expertise of a high
order due to the simultaneous rollout of new business processes. Careful consideration of
all stakeholder requirements and an effective risk management strategy are essential to
achieve quality outcomes.
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