What possible ways of reading input does an iPad have? Right now I can think of:

  • Touch screen (multitouch I believe?)
  • Camera
  • Brightness adjuster (How does that work? Could it be used for anything other than the brightness adjustment?)
  • Orientation detector
  • The standard input buttons

Is there anything I'm missing?

Besides the obvious USB / Lightning connector and the WiFi / Cellular / Bluetooth technology, the iPad has:

  • Volume up / down switch
  • Silent / Screen rotation lock
  • Microphone
  • Built-in speaker
  • The gyroscope
  • The accelerometer
  • The ambient light sensor
  • Micro-SIM card try
  • Facetime / iSight camera
  • Multi-Touch display

Bear in mind that these are for the latest version.

  • There is also the GPS on the Cellular version. – Matthieu Riegler Jun 7 '13 at 7:47

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