not sure there is one ready for you to purchase. However, what is the API the cashier and the scanner provide? Do they have browser plugins or similar. Maybe starting to investigate how in general the two work with browser based applications will give you a starting point. Let us know once you know more on this.
i dont know about the barcode API ! currently we are using retailpro application its supplied equipment with application itself!
Is it any compatible cash draw box and barcode scanner API to ADF application ? please let me know the brand name and link also.