Barcode.read Function

Format

s = Barcode.read(ʃmessageʅ);

Description

The Barcode.read function starts an Android device's camera and allows the operator to scan a barcode. The barcode can be in several formats, including QR codes. An optional string expression, message, is displayed on top of the camera view and can be used to display instructions to the operator.

This function only works on Android devices and returns a blank string if used on another device.

Return Value

The function returns a string value containing the barcode's value. If the operator canceled before a barcode could be successfully read, the function returns a blank string.

Example

PROC BLOOD_SAMPLE

preproc

if BLOOD_SAMPLE = "" then
BLOOD_SAMPLE = Barcode.read("Scan the blood sample barcode");
endif;