Editing RFID door lock (section)

=== Wired Networking ===

* Ethernet shield and web server
** One wire between door and router, second wire between router and server, and always on door server. As few "moving" parts as necessary.
** would require people to be on the loadoffun wireless to buzz people in
** could store access keys locally incase server melts down
* No ethernet alternative: signal boards via simple copper wire from central web server.
** '''plus:''' no ethernet shield cost.
** node server (running dyn-dns or similar) authenticates users and then sends command over serial to a usb-attached arduino/similar peripheral. peripheral sets signal lines high for corresponding node devices. Node devices open door locks. 
** node server could run fancy program (auth via tropo sms, email, web app), also just as feasible with wireless networking