I can never wear a pair of glasses that has a 3G connection.
For better or for worse, I experience heightened ElectroSensitivity to the point where a 3G device that's operating within a few feet of me gives me a headache.
Most mobile carriers are already starting to deprecate their 2G networks.
Wearable wireless devices like Google Glasses will be a hazard for me, and many others.
Within the next few years, I won't even be able to use a cell phone.