The Z4 DataTraq (and earlier models like the Portable Barcode Reader) store every scan into memory, even when the unit is plugged into the PC.
To clear memory, just press and release the FUNC key, then press and release the 1 key, then press and release the 9 key. This is called ‘Function 19‘.
The display will prompt you to confirm that you really do want to clear memory – press the YESkey to clear memory.
