What kind of technologies are wifi SD cards and cameras using? For example, Eye-Fi SD Card, Canon, and Fujifilm.

I know the Transcend Wifi SD Card uses a http server for file transmit and broadcasts TCP packages on port 5566 when new pictures are made. The TCP package contains the path to the pictures on the http server.

closed as too broad by AJ Henderson, mattdm, Paul Cezanne, MikeW, John Cavan Feb 4 '14 at 11:43

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • The method used is specific to the device so this will be too broad for us to answer (if it's even on-topic here anyway since it seems to be more about networking/software development than photography.) – James Snell Feb 3 '14 at 13:48
  • update: Just to get a feel for how many products and systems there are, have a look at the ShutterSnitch Forums (no relationship, just found them while searching around.) – James Snell Feb 3 '14 at 14:02
  • I think James is right, here. There are too many possibilities, and the future will hold even more. Perhaps you could explain the particular problem you are trying to solve? – mattdm Feb 3 '14 at 16:47
  • I'm writing an app and just like to have a small overview like which card uses a http server or ftp server. – Penta Feb 3 '14 at 20:11