Sole Prints
Posted: Thu Nov 07, 2013 8:55 pm
Here is a little background on one of the new features that will be shortly added
to the new Search & Rescue HST ReConn Form.
So, after trying to figure out a way to get a sole print from a shoe/boot without
using ink, which is what CSI Labs use, and not wanting to use something that
would either discolor or make the sole loose its grip, and trying out several
kitchen items, bingo! Food coloring, just the right thickness so the paper doesn't
absorb the liquid, nor does it bleed or run off the sheet of paper, and is widely
available. Apply the food coloring lightly with a brush to the threads of the
shoe/boot, one shoe at a time, put the shoe on, and roll from the ankle towards
the toe, placing your full weight on to it, and carefully lift to remove. Repeat with
the other shoe/boot. Allow to dry, and then add the important information in the
corner. When taking the photo be sure to keep the camera parallel with the print,
best to tape to the wall and take a picture, even better if you can use a tripod.
Use a zoom lens between 40-55mm to reduce any distortion. Either take it in black
& white or convert from color to black & white.
It is very important that you do this before each and every trip since the thread
patterns and wear patterns will change after your outing. These imperfections give
the shoe print their uniqueness, very much like a fingerprint, and allows SAR to
differentiate them from the 1000's of other footprints in the area..
Here is an example: http://WildernessApertures.com/img/s1/v ... 6619-5.jpg" onclick="window.open(this.href);return false;
to the new Search & Rescue HST ReConn Form.
So, after trying to figure out a way to get a sole print from a shoe/boot without
using ink, which is what CSI Labs use, and not wanting to use something that
would either discolor or make the sole loose its grip, and trying out several
kitchen items, bingo! Food coloring, just the right thickness so the paper doesn't
absorb the liquid, nor does it bleed or run off the sheet of paper, and is widely
available. Apply the food coloring lightly with a brush to the threads of the
shoe/boot, one shoe at a time, put the shoe on, and roll from the ankle towards
the toe, placing your full weight on to it, and carefully lift to remove. Repeat with
the other shoe/boot. Allow to dry, and then add the important information in the
corner. When taking the photo be sure to keep the camera parallel with the print,
best to tape to the wall and take a picture, even better if you can use a tripod.
Use a zoom lens between 40-55mm to reduce any distortion. Either take it in black
& white or convert from color to black & white.
It is very important that you do this before each and every trip since the thread
patterns and wear patterns will change after your outing. These imperfections give
the shoe print their uniqueness, very much like a fingerprint, and allows SAR to
differentiate them from the 1000's of other footprints in the area..
Here is an example: http://WildernessApertures.com/img/s1/v ... 6619-5.jpg" onclick="window.open(this.href);return false;