This tricky device's function is to detect moving enemy units. However, it requires some practice to use effectively. Activate it by clicking 'Aye?'. The display shows an arrow in the center which is the direction your gal is facing (North is at the top). The flashing blobs show units which have moved recently. Large units, or fast moving units, will produce larger blobs. Static units will not be detected.
Or you can use it to smash some skulls.
Melee (Stun = STR*0.5, Skill = MA, Acc = 70%, 8 TUs)
Note that after using the Aye-Phone, pressing ALT will show the uncovered contacts on the battlefield.