Build your own coin-operated Wi-Fi hotspot ticketing system | Arduino Blog
Portable 58mm Thermal Receipt Printer Wireless BT Mini Bill Ticket POS Mobile Printer with Rechargeable Battery Support ESC/POS Compatible with Android iOS Windows for Restaurant Supermarket Retail Clothing Office Small Business
GIS-TP1: Hotspot Ticket Printer – WISPzone: Wi-Fi for hotspots and WISPs