The mobile app integrated WU-1a sounds perfect for my needs - anyone aware of firmware upgrades or other avenues that would allow use with the D3100? I am not equipped/inclined to pursue serious hacking.
This is the list of cameras compatible with the WU-1a, via Nikon:
- Coolpix A
- Coolpix P330
- Coolpix P520
So at this time the D3100 is not compatible with the WU-1a.