This is more of a standards problem then a start up problem. Minimally, you need to get something standardized using public key Identification. Another option

This is more of a standards problem then a start up problem. Minimally, you need to get something standardized using public key Identification. Another option is to deploy something like secure in band wireless pairing[1] which prevents anyone trying to spoof an access point while you are in range of the existing access point. Essentially, the access point uses transmit/not transmit as an encoding mechanism for secure announcements. Anyone attempting to jam that can't because forging an announcement requires you to not transmit at key points [1] http://people.csail.mit.edu/nabeel/TEP.pdf http://people.csail.mit.edu/nabeel/TEP.pdf