Iodine Vapour, Secret and Indented WritingLet's start the ball rolling with an image of a handkerchief, above, that contained secret writing and which was apparently taken from a German Uboat commamder, U234, in 1945. This particular handkerchief had been treated with iodine which clearly shows up the secret writing in code I believe. The correct term for this form of writing is 'Indented Writing' similar to that found on the Somerton Man Code page where the SA Police, using a UV light, discovered impressions on the back page of the copy of the Rubaiyat, they then used a recover ytechnique to lift the images of the writing so that they were visible. Iodine Vapour or other lifting technique was very probably used.
George Dasch Case
|Two 4 man teams landed by U Boat in 1942|
Chemical Reagent Technique
|George Dasch's Handkerchief|
Fingerprinting techniquesUsing fingerprints as well as Indented writing recovery techniques was an essential aspect of finding and succesfully prosecuting espionage agents. In this video taken in 1948, a US Police officer is seen 'dusting. a car dash to recover fingerprints after which he photographs them. There is a serious question related to the Somerton Man case as to why the only fingerprints taken were from the man himself and not from any of 14 or more items that could have been treated/dusted to reveal fingerprints:
Fob Watch encoder & Other Examples
Extremely well made and as good looking as any fob watch, this kind of instrument saw lots of use and action during both World Wars.
There are similar devices that were used and hopefully we will be able to bring more images of some of the more inventive and readily concealed versions before too long.
Miniature CamerasThis is a miniature camera from the WW2 and cold war years, American in fact. For it's time it was very advanced and proved to be very effective in the filed.
Light weight, very small and relatively easy to conceal from a normal cursory search, an excellent piece of tradecraft.
Whilst such tools were very useful they were of course also a liability, being found with one of these was tantamount to a potential death sentence.
Many of these weapons were made in Sheffiled UK and then finished in the US by Military Manufacturer John Ek.
Sleeve daggers and similar items could be sewn into clothing or strapped to your arm and were an ideal surprise weapon for use in close combat situations.
This is a particularly clever instrument, it's a shoe dagger:
You'll notice how this weapon has been carefully crafted to fit within the sole of a normal shoe, easily detectable in this day and age but at the time it would not have been an easy matter and by the time the would be discoverer found it it may have been too late.
Worth considering is that many of these weapons would have been tailor made to fit particular sized shoes and no doubt male and female.