Idea to develop a Hardware Proxy to print easily without a posbox or similar

Some advantages:

• Simple installation and simple configuration in any operating system
• Avoid buying Posbox or raspberry
• Multiple hardware proxys in same app
• Compatible with non ESCPOS printers
• Reprint receipts
• Receipt to PDF
• Print main ref instead order ref
• Could help to adapt with some local legislations such as "Factura simplificada" in Spain
• etc...