[techhelpbb]

Let me propose something else to achieve this result...

In previous years I asked in the official questions if a team was allowed to place a light source in the driver's station area anywhere for their alliance. In other words...if you are in 1,2 or 3...I asked if we could put say a flashlight in our other alliance member's windows. The answer was yes at the time as long as they agree and it does not require a power source or extra interconnecting cables.

So that would sort of indicate that there is a chance that FIRST would allow you to send data between robots or driver's stations using light. Maybe by modulating the low power laser we have in the past been allowed as well.

There are lots of ways to send data using light: modulation and encoding for example. You could take a picture of a QR code: there's a bunch of bytes and if you do that over and over there's a lot of bytes. You could watch an LED toggle between ON/OFF or change color. You could AM modulate a laser. You could use IrDA transceivers.

You could potentially exploit the fact that some cell phones have a camera that faces the user.
You could potentially use NFC.

So this is solvable without exploiting the field.
There is a way to actually communicate across the VLANs but it is a hack and very ungracious to your competitors.
So please - do not put yourselves or your team in the position to get in trouble with FIRST.