- 1 year ago
Barcode reader (scanner) prefix with this symbol : " ~ "
If your barcode scanner is configured to prefix scanned data with the "" symbol, you can capture and handle the scanned data in your application by checking for the presence of the "" symbol at the beginning of the scanned string. Here's an example in Python:
pythonimport keyboard
def on_key_press(event):
if event.name == 'enter':
# Barcode scan complete, process the scanned data
scanned_data = keyboard.get_typed_strings()
# Check for "~" prefix
if scanned_data and scanned_data[0].startswith('~'):
barcode = scanned_data[0][1:] # Remove the "~" prefix
print(f"Scanned barcode: {barcode}")
else:
print("Invalid barcode format")
# Register key press event listener
keyboard.on_press(on_key_press)
# Keep the script running
keyboard.wait('esc')
In the above example, the keyboard
library is used to capture keyboard events. The on_key_press
function is registered as an event listener to handle key presses. When the "Enter" key is pressed, the scanned data is retrieved using the get_typed_strings()
function. If the scanned data starts with the "" symbol, it is considered a valid barcode, and the "" symbol is removed. Otherwise, an invalid barcode format message is displayed.
You may need to install the keyboard
library by running pip install keyboard
before running the above code.
This is a basic example, and you can adapt it to suit your specific requirements or integrate it into your existing application or workflow.