MagTek USB KB INTELLIHEAD - Manual (Page 15)

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SECTION 3. OPERATION
CARD READ
A card may be swiped past the read head at any time. The magnetic stripe must face toward the
head and may be swiped in either direction. If there is data encoded on the card, the device will
attempt to decode the data and then send the results to the host via a USB HID input report.
After the results are sent to the host, all card data will be purged from the device, then the device
will be ready to read the next card.