This document proposes a design for a wireless printer fastener using a Raspberry Pi that allows mobile devices to directly print files without needing a computer. The system uses a Bluetooth dongle connected to the Raspberry Pi to receive files from a mobile device. The Raspberry Pi runs a printer driver program to control the connected printer via Common Unix Printing and send print jobs. This bypassing the need to send files from a mobile device to a computer first before printing, making the printing process more direct and convenient.