Accelerometer

[NOTE:  I may post a few times with information without completing the post.  This is one of those.]   

   Your phone is no faster than you can throw it in anger.  But the powers of communication that be decided it needed an accelerometer.

   Why?  Because it's neat when you turn the phone and the screen flips.

   What else can the accelerometer do?  It allows fairly accurate measurements of a phone's movement in all 3 directions of movement.

   Why does that matter?  It matters because it's accurate enough to tell where your fingers are pressing as you use the phone.  That includes dialing numbers, texting someone,, or entering passwords for your accounts online.

   Yeah.

   Still pretty neat?