Vending Machine

i3 Vending machine:

Bill acceptor - The controller that recognizes bill images might need to be updated or replaced

Payments -Cash (see bill acceptor) - RFID, debit the members account and invoice them through e-mail and let the Treasure know of payment due or overdue. - Credit card, bill the credit card via amazon or paypal. - Bar code and passkey. Buy it online and get a QR code and passkey in your email. Scan the QR code and enter the passkey and it will vend the product if in stock.

Network

- TCP/IP over ethernet with a server backend that processes and logs purchases.
- How to handle encryption of transactions? 

Power

- How do we add functionality yet keep the power requirements low?
*embedded ARM based computer?
*Beefy microcontroller?

Security - Webcam linked to tilt/ shake sensor. Take picture of someone shaking the machine, post it online for ridicule