Innovative Infrared Solutions
Next-generation infrared marking solutions for tactical, rescue, and overwatch operations.
First Responders
When every minute matters, SignalScript™ helps rescuers see what the eye can’t.
The IRC Crayon creates lasting infrared marks that guide search teams using FLIR, SWIR, or night-vision equipment. Responders can mark debris, safe routes, or victim locations without light, sound, or electronics—critical when power and visibility are gone. Its reusable, weather-resistant design keeps the signal clear until every life is accounted for.
Tactical Operations
Silent, battery-free, and durable, SignalScript gives law enforcement and first responders a covert way to mark scenes, routes, and victims when every second counts.
Officers and incident commanders can use IRC marks to identify search grids, secure perimeters, or tag points of interest visible to FLIR/SWIR/NVG-equipped aerial or ground assets without emitting radio or electronic signatures. Marks remain durable through weather and activity, reducing the need to re-mark and allowing teams to focus on rescue, evidence collection, or crowd control. The result is faster scene management, clearer coordination between units, and safer outcomes for responders and civilians alike.
Boating, Hiking & Outdoor Enthusiasts
Whether you’re out on the water or off the grid, SignalScript helps you stay seen when visibility disappears.
Built for adventurers, boaters, and campers, the reusable IRC Crayon creates long-lasting infrared marks visible to rescue drones and aircraft. It works silently—no batteries, no signal, no setup—so you can mark your boat, trail, or campsite for search teams to find you even in darkness or fog. Compact, waterproof, and simple to use, SignalScript™ adds an invisible layer of safety that could make all the difference when help needs to find you fast.
Drone Retasking
IRC marks enable drones to detect, retask, and relay precise ground coordinates — silently and without batteries.
IRC marks are visible to FLIR, SWIR, and NVG drones, allowing operators to retask UAVs to image and relay exact coordinates. Marks are reusable, silent, and non-electronic, so teams can signal routes or victims without a detectable signature. The result: faster search cycles and safer coordination between air and ground assets.
SignalScript is For
Why Choose the SignalScript IRC Crayon?
SignalScript IR Crayon Variants
The Search & Rescue FLIR Crayon™ is a patent-pending infrared marking tool designed to enhance visibility for ground and aerial responders in smoke, darkness, and debris-obstructed environments. Its heat-responsive compound creates marks detectable by FLIR and thermal imaging systems, enabling faster location tracking and coordination during critical rescue operations.
Mark. Signal. Survive.
Search and Rescue (FLIR)
The “Overwatch” SWIR Crayon Formula™ is engineered for enhanced visibility under short-wave infrared imaging systems used in reconnaissance and aerial overwatch operations. Its specialized compound produces crisp, high-contrast markings detectable by SWIR-equipped drones and sensors, enabling silent coordination, route identification, and covert signal marking in complex mission environments.
Precision Marking for Low-Visibility Operations. Overwatch (SWIR/FLIR)
The Wet Ops Ready (NIR-940) Crayon Formula™ is built for maritime, coastal, and rain-soaked environments where standard infrared tools fail. Engineered with a hydrophobic compound tuned to the NIR-940 wavelength, it delivers long-lasting, high-contrast marks visible under NVG and near-infrared systems—because in the field, every mark truly matters.
Where Every Mark Matters.
Wet Ops Ready (NIR-940)
The Dry Ops (NIR-940) Crayon Formula™ is designed for desert, arid, and high-temperature operations where visibility and endurance are critical. Its advanced NIR-940 compound withstands extreme heat and dust, producing clear, durable infrared markings visible to NVG and thermal optics—Heatfield Signal Tech built for the harshest terrains.
Heatfield Signal Tech.
Dry Ops (NIR-940)
SignalScript vs the Other Guys
What Military and Industry professonals say
Lt Colonel Randy Coats
US Air Force
"The utility of an durable, easy-to-carry infrared marker is easy to see.
As a Hurricane Katrina survivor, such a tool would be very useful in disaster recovery operations, for both survivors and recovery personnel."
Mark Haynes
Cejay Engineering
Thinks F3 Overwatch could be useful in drone retasking.
Go-to-Guy Timberlake
Ethical Stalking for Government Contractors®
High Confidence Assessment:
Novel infrared marking technology addresses clear gap in existing electronic-only IR market. Multiple federal pathways available across defense, homeland security, and civilian search/rescue applications.
New Person
What they think
Product Development
Provisional Patents Filed
In August 2025, two provisional patents we fled with the USPTO for the NVG, NIR, SWIR, FLIR infrared marking tools, known as IRC Crayons
Civilian Community
Interested in the personal safety thermal imaging crayon? Stay informed about product development and how you can help fund this mission.
Funding
Opportunities
Join us in our mission to improve emergency response capabilities; we are seeking collaborative efforts for ongoing development.
Safety Solutions
The IRC Crayon™ is designed for extreme efficiency. Its silent operation is perfect for covert missions where every mark can make a difference.
Future of Rescue
Discover practical applications of our technology in diverse fields, including law enforcement, firefighting, and humanitarian efforts, showcasing its versatility.