Im working on a project which is summary reading barcode reader data and send it to another pc. Simply i wanted to sniff the barcode reader data.
In the project i will connect the barcode reader to my raspberry pi, write some codes on it for listening usb port, and then when any barcode readed from barcode reader raspberry pi should get the readed barcode and send it to another pc which is also connected with usb ports of raspberry pi.
They both should be ( barcode reader & pc) connected with usb ports.
According to my researches, for example raspberry pi 3 has 4 usb ports. But i didnt find how to read and send data at the same time with different ports. There is some host and slave issue which i didnt get clearly.
For this issue;
Which type of raspberry should i use if it is possible?
Is it possible to do it with not adding add another card like usb host card on raspberry pi?
What is the host/slave problem here?