Specifications

LIST OF TABLES
used to as a temporary store for variables. It is usually volatile in
nature.
Reader Term used to describe a device which is able to read/write to an
RFID transponder. Used interchangeably with the term “interrogator.”
RFID Radio Frequency Identification. A technology allowing objects to
be marked (or tagged) with small electronic identifiers which can be
detected wirelessly using radio-frequency waves.
SIM card Subscriber Identity Module. Component of a G SM system provided
by the Mobile Operator which identifies the mobile device to the network.
SMPS Switched-mode Power Supply. A technique for converting DC voltages
by switching them into AC at high frequencies and then back to DC
again. High conversion efficiencies are possible with such designs.
SMS Short Message Service. A text-based message of up to 160 characters
which can be sent across GSM networks.
SOC State of Charge. Term used to describe the capacity remaining in a
battery. Usually me asured in percentage of total capacity.
Tag RFID device which emits an EM wave for identification purposes after
being interrogated by an RFID reader. The term is used interchangeably
with “transponder.”
Transponder RFID device which emits an EM wave for identification purposes
after being interrogated by an RFID reader. The term is used interchangeably
with “tag.”
Volatile memory Memory which does not hold its state after power is
removed. Typically, working RAM in a microprocessor uses memory
of this form.
1