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1 - 14 Document Reader Imaging Guide
Intelligent Signature Capture - IMGBOX
IMGBOX allows you to configure the size and location of a signature capture area relative to its proximity to a barcode. This
allows you to tailor a signature capture area to a specific form. In order to use IMGBOX, you need a set form where the signature
box location is in a known location relative to a barcode. You can input the overall size of the signature area, as well as specify
how far the signature area is from the barcode, vertically and horizontally. You can also set the resolution and file format for the
final output of the signature capture image.
Note: IMGBOX commands can only be triggered by one of the following types of barcodes: PDF417, Code 39, Code 128, Aztec,
Codabar, and Interleaved 2 of 5. Once one of these symbologies has been read, the image is retained for a possible
IMGBOX command.
The following IMGBOX example was executed and viewed using QuickView software. This software is available at
www.handheld.com. Click on Services and Support-Download Software. Select 4800dr from the Products list, then select
QuickView Software Utility.
Below is an example of a signature capture application. In this example, the aimer is centered over the signature capture area
and the trigger is pressed. A single beep is emitted, indicating that the imager has read a Code 128 barcode and the data has
been transferred to the host. An IMGBOX command may now be sent from the host to specify the coordinates of the signature
capture area below that code, and indicating that only that area containing the signature should be transferred as an image to
the host.
To see this example, align the aimer with the signature area (not with the barcode), then press the trigger.
Send the following IMGBOX command string after the button push:
IMGBOX245w37h55y.
Note: Case is not important in the command string. It is used here only for clarity.
The following image is captured:
The IMGBOX commands have many different modifiers that can be used to change the size and appearance of the signature
image output by the document reader. Modifiers affect the image that is transmitted, but do not affect the image in memory.
Modifiers always begin with a number and end with a letter (case insensitive). Any number of modifiers may be appended to the
IMGBOX command.
Note: The IMGBOX command will return a NAK unless a window size (width and height) are specified. See H - Height of
Signature Capture Area (page 1-15) and W - Width of Signature Capture Area (page 1-16).
IMGBOX Modifiers
A - Output Image Width
This option is used to size the image horizontally. If using this option, set the resolution (R) to zero.
Example of Image Width set to 200A: Example of Image Width set to 600A: