[noxn]

I want this. I would carry it everywhere.

[moylan]

i'd keep it in my bag next to my towel. :-)

but it would be really useful. have used the metal detector in the android tricorder app to find metal in places where we were planning to drill.

if somebody builds them in bulk the price will come down. even an expensive version will sell to geeks, nerds and hackers.

[ignorethat]

I want it, but only if Home Depot sells it for under $30.