How to use a PDA as a computer keyboard, where the PDA scans a barcode and outputs the data on the computer side？

I recommend you to install KDE CONNECT or Bluetooth Keyboard & Mouse.

You can download and install them from the Google App Store.

KDE CONNECT：Download

Bluetooth Keyboard & Mouse：Download

Tutorial on using KDE CONNECT:

1. Please install KDE CONNECT on both your PDA and computer.

2. Make sure the PDA and computer are connected to the same WiFi network.

3. Open KDE CONNECT on both devices at the same time and after refreshing you will see that your device name is displayed.

4. Now tap on the device name to start pairing, you need to tap Accept on the other device.

5. You will see this screen if the pairing is successful, please click Remote Input.

6. Then to access this screen, please click on the keyboard in the upper right corner.

7. Then when you scan the barcode with your PDA, the data will appear on your computer at the cursor input location. You can create a notepad to test this.

Please feel free to contact me if you have any questions.