Feb 29, 2016 - Square has updated its Android and iOS apps to introduce the optional Cash Drawer, which holds on to the money you receive in one handy.
Well I'm not sure in VB because I was also looking for the same or similar to that and I've looked on Microsoft POS but it not clear what or how to work with those then I also tried JPOS which is java it also gave me problems till I created my own java code to dispense well my case was dispensing cash out of the dispenser device to the use. But in JPOS I did see the classes with CashDrawer on opening and closing it so I think the easy and quick way is to try check that out and try to see the Methods so that you can write your own class to control the drawer because in Microsoft I didn't find solution and support in this kind of scenario.