If you bury it, include a small electronic monitoring and reporting system.
This system will monitor the vibrations of the buried case to detect the sensation of digging, which is likely to uncover it. This will require signal characterization and classification software.
Then, it could send a 3G signal back to you at home base with the report of the digging so that you can hurry to the sight to interdict the attempt at theft. If you are not fast enough, get the report too late, or otherwise the buried cache is carried off, the system should have a GPS/GLONASS system to continuously report its location to you following recovery, until you properly shut it down. This 3G system should operate in EMCON at all times other than reporting back to you. This will prevent it from being triangulated by area cell towers. It will also allow you to clone the SIM card of any cell phone you use on a daily basis without the cloning being detected in the cell phone network, as the likelihood of you using your cell phone at the moment the buried cache needs to report is as large as your appetite for cell phone use.
This will require an antenna and feedline to get the antenna above the ground plane (literally), so it should not be buried in a place where mowing is common. Also, the antenna should be disguised as a root or stick sticking up out of the ground. The length of this feedline should be sufficient to get the cache below the site's frost line if the cache includes any fluids.
Finally, all of this should be powered by an extremely efficient microcontroller and large Li-Ion battery pack which spends most of its time in a zero-energy use sleep state, waking up only to detect vibration and then go back to sleep. A final report can be sent to notify you of the battery's depletion before the system shuts off due to said depletion.
Energy harvesting technology might be useful if there is a source of mechanical vibration that is relatively steady, but use of a solar power cell above ground is ill-advised, as it would definitely tip off people to the presence of something nearby.
The idea of a solar charger buried with the monitoring and reporting system is just too stupid to comment on, outside of this comment here.
Other environmental sensors might also be included, such as cache temperature and humidity to guard against freezing and water infiltration. Again, reporting should be infrequent and only the result of sensor threshold violation alarms, to prevent the cache being triangulated by its 3G emissions.
If you bury it, include a small electronic monitoring and reporting system.
This system will monitor the vibrations of the buried case to detect the sensation of digging, which is likely to uncover it. This will require signal characterization and classification software.
Then, it could send a 3G signal back to you at home base with the report of the digging so that you can hurry to the sight to interdict the attempt at theft. If you are not fast enough, get the report too late, or otherwise the buried cache is carried off, the system should have a GPS/GLONASS system to continuously report its location to you following recovery, until you properly shut it down. This 3G system should operate in EMCON at all times other than reporting back to you. This will prevent it from being triangulated by area cell towers. It will also allow you to clone the SIM card of any cell phone you use on a daily basis without the cloning being detected in the cell phone network, as the likelihood of you using your cell phone at the moment the buried cache needs to report is as large as your appetite for cell phone use.
This will require an antenna and feedline to get the antenna above the ground plane (literally), so it should not be buried in a place where mowing is common. Also, the antenna should be disguised as a root or stick sticking up out of the ground. The length of this feedline should be sufficient to get the cache below the site's frost line if the cache includes any fluids.
Finally, all of this should be powered by an extremely efficient microcontroller and large Li-Ion battery pack which spends most of its time in a zero-energy use sleep state, waking up only to detect vibration and then go back to sleep. A final report can be sent to notify you of the battery's depletion before the system shuts off due to said depletion.
Energy harvesting technology might be useful if there is a source of mechanical vibration that is relatively steady, but use of a solar power cell above ground is ill-advised, as it would definitely tip off people to the presence of something nearby.
The idea of a solar charger buried with the monitoring and reporting system is just too stupid to comment on, outside of this comment here.
Other environmental sensors might also be included, such as cache temperature and humidity to guard against freezing and water infiltration. Again, reporting should be infrequent and only the result of sensor threshold violation alarms, to prevent the cache being triangulated by its 3G emissions.
I do not, but bankroll me for a week and I can have a working prototype for you, if you want it.Do you happen to sell said equipment?
Why does everyone think I just sit around in my underwear thinking this stuff up as opposed to brainstorming it extemporaneously as I write these posts. Granted, the Advanced editor allows for a sizeable amount of editting and revision as the idea developes. Still, extemporaneously!Clearly you have put ay too much thought into this .
BTW, ignore the fact that I did in fact write that post while sitting around in my underwear.