1) Does this sound like a reasonable way to handle my situation?
2) Are there any applets like this available (whether opensource or commercially) that I could plug in? Or am I better off just writing the applet myself?
Re: JavaPOS Applet
With all the different equipment involved I don't think you will be able to do it all from the web side but it sure would be fantastic if you can! I want to do the same thing if possible. I am struggling to get my simple command line app to talk to the printer/cashdrawer at the moment. Examples and documentation are seriously lacking!