I have just completed Mirror's Edge and I am now going back through to locate all the courier drops. I've noticed that next to a lot of them is some graffiti. Several of the graffiti marks have mentioned 88.7.
I assume this is a reference to the FM radio frequency but I can't seem to match it up to anything. As a side note I will try to find a better screenshot, one that I haven't accidentally shot.
Can anyone shed any light on this?