Putting a tall fence around one’s house gives potential intruders a way to hide from third party observers, but it also gives you a way to hide your “capsaicin claymores” from potential intruders, so. . . Command or sensor detonation is the obvious decision tree. Switchable by remote?
Also working on a way to make a capsaicin fogger from my fog machine, and way to sensor trigger it (including safing it for yard use, & other controls). BTW, “capsaicin claymores”? #3 food can, CO2 cartridge, tripwire, Ghost Pepper powder, etc. When combined with things like Osage Orange as an ornamental face for a fence/wall, blinding strobes, etc., yeh, can have a tall fence/wall and be relatively safe from home intruders. Relatively. (A moat with gators would be nice, though.)
OTOH, Can live in a hardened bunker and not be safe from militarized law enFARCEment thugs.