Augmented reality Digger's Hotline

This idea came to me while trying to locate some buried fiber optic cable under a parking lot to make sure it wasn't dug up while fixing a sinkhole.

Augmented reality Digger's Hotline maps. It's basically an extension of my idea for Google Earth/Google Maps showing locations of buried utilities.

Use an AR platform such as Layar to building wireframe (or simple line) models of buried utilities. Field workers, or even homeowners, can download the most recently updated models to their smart device, then view the digging site (or backyard) through their phone and see the buried utilities "glow" on the ground. If depth is known, it could even triangulate to show below the ground. 3D viewing would also help show depth.

Call is "Digger's X-ray vision" or something like that. You know those ads where they show people trimming hedges blindfolded and then say, "You don't live blind- don't dig blind!" Well, instead they could show people the app for X-ray vision.

The downside is that you would still want physical markings, because trying to hold an AR device while shoveling isn't practical. At least, until full-time, fully immersive AR becomes socially acceptable. Then you could just turn on the utility layer and dig away!