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For our client using prestashop require to incorporate one payment module
Module will present cash as a payment options
It should work with Epson TM-T88V-i Intelligent Printer and Epson Cash Drawer
Cash Payment can only be made by Customer in store (not online) manually processed by employee
When Employee select cash payment a small Keypad should appear to enter information.
Amount tendered then be compared with amount due. (Amount tendered must be equal or more than amount due)
If more than Change due should be shown on screen
Similarly cash refund will also activate CASH screen and logged a reason for refund and negative cash entry.
All orders should have button to print receipt on thermal printer in customized format.
Look and feel is very important to be like modern POS. No another window should open.