7 - Introduction to User Interface
DynaFlex II Go| EMV Contactless/NFC Card Reader | Installation and Operation Manual
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4)
Wait for the device, the host, or the operator to prompt for a barcode read:
a)
The device lights the barcode reader indicator LED next to the barcode reader lens.
5)
Hold the barcode in front of the barcode reader camera:
a)
If possible, use the light from the barcode reader indicator LED to align the barcode within the
barcode reader’s field of view, which extends 16 degrees above / below and 21 degrees to the left
/ right of a line perpendicular to the barcode reader lens.
b)
Hold the barcode as close as 1 inch from the lens. For smaller barcodes, the device will read
immediately. If it does not, gradually move away up to 14 inches from the lens until the device
reports a successful read. Larger barcodes must be far enough away from the device that the
whole barcode is within the camera’s field of view; if a large barcode is too close, the barcode
reader can only see a zoomed in portion of the barcode.
c)
Do not tilt the barcode more than 60 degrees from parallel to the device’s face.
6)
Wait for the device or the host to report the barcode has been read successfully:
a)
The device beeps once.
b)
The device turns off the barcode reader indicator LED.
Figure 7-31 - Scanning a Barcode
7.9.4
Apple VAS for DynaFlex II Go
DynaFlex II Go products support Apple Value Added Services (Apple VAS) protocol.
Contactless transactions using the Apple VAS protocol permits the device reader to perform the following
supported operations:
7.9.4.1
VAS App and Payment Mode (Dual Mode)
The device reads both Apple VAS data and EMV payment data from a tapped smartphone or reads EMV
payment data from a tapped card. When device sends ARQC to the host to conclude the transaction, it
includes EMV payment data in container FC and includes VAS data, if available, in container FE
7.9.4.2
VAS App Only Mode (VAS Mode)
The device reads only Apple VAS data from a tapped smartphone and does not read data from a tapped
card. If the tapped smartphone does not support VAS, the device does not detect or read from the
