Yup, communications is what I think when I think of spooky action at a distance.
It would certainly make things easier for deep space communications.
...or on earth communications.
Imagine, if you will, two perfectly matched ‘crystals’ set apart by thousands of miles, say one in the US and the other in Timbuktu. Whatever happens to one, the other will react the same. If you can get a data sequence to apply to one then the other will ‘receive’ that same data......................