Rapid and reliable deployment of medical countermeasures following likely exposure to a chemical, biological, radiological, or nuclear (CBRN) agent is critical for maintaining the working efficiency and health of the exposed soldier.In this application, we propose a simple, efficient, and easy-to-activate sub-dermal biomaterial-based drug delivery system whose lack of moving parts will serve to substantially increase reliability over existing options in far-forward deployment settings.The format of the solution is a minimally sized wearable patch/sticker that can be applied prior to combat and only activated if necessary.flexible,WEARABLE,patch,microneedle,WIRELESS,medication,Treatment,toxins