How to Interface USB Barcode Scanner with Raspberry Pi 4, USB Barcode Scanner with Raspberry Pi 4, barcode reader with RPi4, Rpi4 barcode reader, usb barcode reader RPi4 Introduction We're glad you could join us for another lesson in our series on programming for the Raspberry Pi 4. The previous chapter covered the steps required to build an IVR using a Raspberry Pi 4 and a Sim800l. Our familiarity with IVRs and how they function has significantly increased. The be ....