Handheld
Handheld barcode readers, 2D and QR codes are designed for all situation where data is to be transmitted to a computer by cable or wireless (for example, Bluetooth). In pocket memory scanners, data are first collected and stored in memory, and then transferred to the computer.
Discontinued
![Opticon PX-36 data collector with LCD display](https://images.codeware.cz/thumbnails/200/Opticon_PX-36.png)