Coin-slot Operated Printing Machine [Deleted]

I want to create a Coin-slot Operated Printing Machine that will be controlled using an Android tablet as the display and control of the printer. The machine will accept files to print via Bluetooth(from any Bluetooth devices), direct transfer and via web(e-mail).

Here is my concept: first is that the coin slot will recognize the coin inputs and when it meets the required amount the printer is now open for access, meaning the user can now transfer the files to the machine via its desired method. The Android tablet will serve as the control for the printer, this is where the user will select what kind of file transfer method he wants to use for printing. Then it will also display what file/s to print and then a control for a "start printing" command.