Is there currently technology that senses the distance and density of matter and requires nothing be behind the object? If this device had the capability to graphically display this information I think that would impress more than anything else. You could scan for a broken bone, find lost objects in the grass (assuming they were more dense than the grass/dirt), or find studs or electrical wiring behind drywall in buildings.
For $10, you can buy a radar-equipped stud-finder and use it to locate the frame behind your sheetrock.
Laser rangefinders can also locate distance to laser-reflective sources and there are many other similar technologies, such as those used in autofocus cameras.
I don't know of any portable technology that could be used to find a broken bone without exposing people to ionizing radiation, but I'm sure we'll figure it out one day.
The killer feature (Score:3)
YES; Radar (Score:2)
For $10, you can buy a radar-equipped stud-finder and use it to locate the frame behind your sheetrock.
Laser rangefinders can also locate distance to laser-reflective sources and there are many other similar technologies, such as those used in autofocus cameras.
I don't know of any portable technology that could be used to find a broken bone without exposing people to ionizing radiation, but I'm sure we'll figure it out one day.