Urinal Mugging

Problem:
One of my irrational fears is getting mugged at a urinal. I'm in a public restroom, my face is to the wall (strictly following proper bathroom etiquette), a hand is occupied. The distance between my head and the wall is close enough that any mugger need just elbow my head and my face gets slammed against the wall; then he could easily take my wallet and run, while I urinate all over myself.

Preferred Unlikely Solution:
Rearview mirrors for each urinal.

Current Solution:
Slight quarter body turn, allowing me proper reflection from the pipe to detect any unusual movement. However, the turn is not enough to eliminate any needed privacy.