Networked airbags for protecting skiiers against avalanches is already prior art: Sign in to read: Networked airbag could save skiers from an avalanche - tech - 20 January 2010 - New Scientist What do you guys think about an idea to put networked airbags on soldiers to protect them from blast injuries? The idea I also filed a patent application for was to put a pressure sensor on soldiers which detects the passage of large blast overpressures. The first to get hit by the blast overpressures may die, but at least the rest of his squad's airbags would deploy by wireless command, hopefully in time if they weren't bunched too tightly together. Those airbags would definately work against tertiary and quaternary blast injuries (being thrown around, crushed, etc.) It would mitigate secondary and primary blast injuries (fragments and the direct effect of blast waves), to a degree that ought to be quantified experimentally. Most blast fragments/debris are ballistically inefficient and lose velocity quickly in free air. The disadvantage of this I see is that soldiers will need to carry more kit (oh no). To reduce encumbrance the airbags need only be rated for NIJ ballistic levels of 1 - I suspect even very rudimentary ballistic protection from bullet standards will increase survivability dramatically by shrapnel/fragmentation standards. This is because a piece of shrapnel of the same mass and velocity of a bullet would have reduced armour piercing capability being either of lower density (e.g. entrained gravel) or poor geometry (spherical ball bearings vs. ogival bullet noses).