The proper procedure to point out the spots on the animals is discussed in the manual. Below is a summary for those who want to contribute and send pictures to scientists:

• Try to take your photographs as perpendicular to the animal (and the area where the spots are visable) as possible. I³S’s performance will seriously degrade when the viewing angle exceeds 40 degrees. However, small angles may have a negative impact as well.
• Only use images where you can see the reference points. To be able to compare images with each other the proper positioning of the three reference points is essential.
• Only send good quality images to the scientists.
• Always send pictures to scientists including information about location and date.

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