Magnetic Card Reader - Intermec 680X Reference Manual

SECTION 4
until the host requests the data. Data is flushed either
when the host explicitly requests that the buffer is zeroed
or when the printer falls asleep.
Smart cards, however, vary widely and many have specific
security issues (such as passwords, cryptographic keys, and
application knowledge of file structure) that must be pre-
sented to gain access to data stored on the card. For smart
card applications, the 6804 and 6808TCR printers acts as a
conduit for commands and data from the host, and returns
data sent from the card.
In normal operation, the printer will probably be asleep
when any card or button transaction begins.
1. The printer will wake up whenever a magnetic card or
2. The button is read automatically whenever the printer
3. The magnetic card is read when the printer is awake
4. This data is stored in an internal buffer in the printer
5. Data directly from the smart card can be read by com-

Magnetic Card Reader

Although insertion type card readers such as the one used
on the reader can read cards either upon insertion or with-
drawal, the read rate is much higher upon withdrawal with
virtually all readers of this type (e.g. the gas pump read-
ers). This is because the card is unstable and the rate of
movement can change drastically when the card is first in-
serted.
If the reader is already awake, and more than one card
could be inserted, the application may choose to zero the
smart card is inserted, or the probe is touched to a
button.
is awake and the button is sensed by touching with
the probe.
and the card is moving.
and available to the host via RS--232 or IrDA.
mand from via RS--232 or IrDA
Intermec Portable Printers Technical Reference Manual
Operation
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