Indian-Origin Researcher Invents Satellite-Free Navigation System Which Uses Earth’s

[ABNARTY]

I would be really interested to learn the details of this. I agree, current GPS is too vulnerable and way to integrated into everyday life. I've know people who will not drive a mile anywhere without their GPS telling them where to go. 

Although, this could be one of those Darwin opportunities. 

Ask the "nav generation" what resection is if you want to short-circuit their brains.

Cheers

Shoot, north or south is enough to do the trick.