IPhone 5 red blinking light?

I have had my iPhone 5 for months. Tonight I just noticed a TINY red blinking light at the top of the screen, on the left of the thing under the camera. It is only noticeable in the dark. It's driving me nuts.
Does anyone kno what it is? I heard from someone that apple and the FBI can "spy" on you if you have the iPhone 5.

Can someone tell me what it is?

There's no light on the iPhone other than the LED for the flash.
And no of course the FBI can't spy on you through the phone

I have it too. I'm not sure what it is I was wondering the same thing!

The i5 has moisture detection. The red light indicates moisture in the device and they suggest you limit your use until the light goes away. You can speed the drying process by putting it in a cup of dry rice.