How To Hide Your Infrared Thermal Image or Body Heat Signature

How To Hide Your Infrared Thermal Image
or Body Heat Signature

For us mere mortals and preppers, there's no real 100% effective way to hide from an infrared imaging camera - however, there are some pretty effective ways to make life a lot harder for a IR camera operator to spot you down on the ground.

Even a luke warm human body can be spotted very easily by the infrared heat it gives off.

Why Do You Want To Hide
 Infrared Thermal Image.?

There are several reasons why you need to know how to hide your infra red thermal image or heat signature from the powers that be, but mainly for your own safety.
In the early stages of a SHTF situation where we would be creeping into the a country WROL everyone would become a suspect as martial laws attempts to take hold of the public.

For us preppers, non compliance with this government strategy is why we all prep in the first place. 

For that short period of time where people are being rounded up, for 'your own protection' of course, you cannot afford to be bunched up with the sheeple - putting distance between you and what our government think is best for us, is a wise move, and that will mean avoiding any sort of air borne surveillance, including drones.

Modern thermal imaging equipment is very advanced which is going to make evasion from an IR camera a difficult and somewhat challenging task if you really want to go unnoticed.

Normal day or night time camouflaged clothing will work very well to the naked eye, and to some extent that's the best we can hope to do under 'normal' circumstances.

At night, selected clothing can give excellent camouflage, making you almost undetectable, but only to the naked eye.
But with the best will in the world your going to stand out big time as soon as the bad guys introduce thermal imaging. 
Anyone with a thermal IR scope on the ground, in the air, or even with a drone flying overhead, can spot your body heat signature immediately.

What Is A Infrared

Thermal Image.?

Infrared is light that's not visible to the human eye.
The electromagnetic spectrum ranges from low energy to high energy, with radio waves having a set wavelength along the low energy scale. This low energy level is not visible to the human eye, otherwise we would be able to see the radio wave itself.
Further along we have a frequency we can see called visible light.

Between the low energy radio wavelength and our visible wavelength comes the infrared scale - it is outside our visible light scale so we cannot see the infrared either.
Unfortunately for us, body heat radiates at around 0.01 - 0.0004 - and as you can see on the chart, is smack bang in the middle of the infrared wavelength scale.

In short, there is no absolutely certain way to become an invisible target to infra red.
Interestingly, one of the most effective methods we have against being detected by IR is to hide behind glass. Glass is actually opaque to the IR imaging.
Of course, it's quite an impractical solution as it would mean carrying a pane of glass around with you everywhere!

Seeing as infrared is looking at your heat signature it makes sense to try to 'change' your appearance wherever possible.
Change your body outline in size, shape and temperature.
Achieving any one of these can fool IR cameras and operators into thinking you are not of human shape and therefor not the target they are looking for.

There Is Also A Phenomenon Know As Thermal Crossover

Thermal crossover will happen after sunrise and after sunset when you find the area temperatures are relatively even and uniform, thus having an overall similar temperature as each other

If you can mask your main thermal signature you then have a very high success rate and may well be able to move around, undetected, during these particular time periods.

Masking You IR Signature

Your first consideration is temperature - or more specifically, how you body temperature differs from your immediate surroundings.
Masking this temperature difference is straightforward but very difficult to maintain.

Thermal Barrier Against Infra Red Imaging 

Putting a thermal barrier between you and the IR camera is easily achieved, and in its simplest terms a woolly blanket would do the job!

But in real terms that would only last a few seconds before your body heat has permutated through the blanket and your body shape now stands out fully.

Kick it up a notch and use a 'mylar' thermal blanket, which reflect a lot of heat, and you have just giving yourself a bit more time.
In effect, the more insulation between you and the IR the longer you can remain undetected. 

Go the whole hog and sandwich layers of Mylar between woollen blankets and you have an effective barrier that will give you precious minute while the IR fly's over scanning for heat signatures.

Using other larger objects to mask you signature will also work to a degree.
By transferring you heat to another, larger object, you can give the appearance of one large object that is not human shaped.
You can think of this as a 'heat sink' where you transferring heat between objects.

Another method of IR avoidance is to vent your heat to atmosphere. In effect reduce the heat your body is giving of - although there will always be hot spots.

If you have time, choosing a confined space will, in effect, heat that space up to give a uniform heat that has no human shape.

If you squeezed in a dustbin, for example, it is very possible the dustbin would trap and maintain the heat from your body and thus give off a 'hot dustbin' shape.

The IR camera operator is trained to look for unusual heat sources that are not in keeping with the surrounding area. 
So ANY escaping or UNUSUAL heat source will be investigated.

Immediate precautions against IR are quite simple: wear an insulated jacket, gloves, a hat or mask that covers your face.

Anything to give a layered a effect.
Although temporary, it may buy you time form an IR drone just scanning the area.

Use you natural surrounding where possible - heavy tree coverage, bushes etc, these will break up and disperse the heat and thus make a diffused heat signature. 

If you have to move around, choose a misty, rainy day to do so - IR performs badly in the rain.

Always try to put a physical barrier between yourself and the infra red. a wooded area and below the tree canopy is ideal and will help.

Things To Avoid

A human running heat signature will stand out more than a static one - it will be far quicker for an operator to see, as well as attract attention quicker.

Also be aware that being too cold will give the opposite effect and appear as a dark shadow.
This in itself could give you away if you do not blend with the surrounding temperatures. 

An open field or any open space is to be avoided.

No matter what camo or avoidance technique you employ, you will be seen as something different within that environment, and therefore investigated as a target.

There is no overhead cover, vegetation or building to help mask your thermal image - any open area is the last place you want to be.

Cover up to reduce heat loss - you will gain time as the IR scan the area.

How To Hide
Your Infrared Thermal Image
or Body Heat Signature

As you can see, hiding from infra red cameras is not an easy task, but with a bit of forethought there's a lot you can do to give yourself the edge. 

  • Move about just after sunrise and sunset - best time where ambient temperatures are equal.
  • Put on several layers including head wear as soon as you think you are being tracked.
  • Use heat reflective camouflage to reduce your heat signiture
  • Use your overhead surroundings to help displace and disperse your heat pattern.
  • Hide under larger, solid cover. Especially if warmer than you.
  • Simply stay inside a building until safe to go out..!
Steve Hart UK Prepper

I hope this article has been helpful.
Even having the knowledge to outsmart the IR camera will give you an added advantage for escape and evasion should the SHTF.

Remember, capturing an infra red heat signature is only as good as the camera operator - so if you can make that job as difficult as possible your in with a chance..!

Happy Prepping Folks.


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1 comment

  1. Hi Steve,

    Thank you for posting such helpful post. Just an offvthe cuff thought, but would fire glass (as in the loft insulation stuff) help mask heat/IR detection? I’ve been reading up on Prepping and after taking a good look at the civil unrest have decided I need a plan.
    Newbie Prepper, Dee.

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