You may think this is an irrelevant tangential topic, but in the near future thi s could become a widespread issue. The bottom line is: As technology advances, i t becomes very difficult to hide the secret gold.

A modern SmartPhone (Android or IOS) has 99% of the components needed (CPU, Memo ry, Battery, Display, and Audio I/O port) for an operational hand-held 200 gram gravity meter sensitive enough to detect hundreds of tons of refined gold buried tens of meters underground. Experimental evidence (See Source 1) suggests that gravitational field strength information exists within the noise level signal of a typical electrolytic capacitor. Modern signal processing techniques (within the CPU and Memory capacity of a modern SmartPhone) can ferret out the gravity signal from other (EMI & Thermal) noise.

Using an internal AGPS receiver, the enhanced gravity signal intensity can be ad justed for known variances (Sun, Moon, & Milky Way) then integrated over space a nd time to derive quantity (in Metric Tons (Source 2 page 66)) of differentially denser mass (gold) buried in relatively less dense surrounding earth.

The Operational Amplifier which costs USD $3, and the Electrolytic Capacitor whi ch cost $6 are easily packaged in a format that can be plugged into a standard S martPhone Audio jack. This plug-in module can be manufactured and sold profitabl y for under $30.

If millions of people became aware of the locations of massive stores of gold an d had access to low cost equipment that provided irrefutable physical evidence t hese quantities of gold exist in these locations, I do not think these millions of people would be content to continue to use debt as money.

Throughout history the use of paper as money has always eventually failed. This time is no different.

Source 1: http://www.rexresearch.com/1hodorhy4/smplgmtr/smplgmtr.htm

Source 2:

http://www.initialexploration.com/uploads/HP_Gravity_Surveys.pdf

Source 3: http://www.gizmag.com/3d-robotics-iris-gps-guided-quadcopter-drone/28818/

Interesting places to look: Under East Avenue, in front of BSP, The Central Bank of the Philippines Under the swimming pool of the Philippine Plaza hotel 177 sites identified by Bob Curtis referenced in Seagrave Gold Warriors and hundreds of smaller undocumented sites.