In its original form encryption was first used by the ancient Egyptians, Mayans, then the Greeks and Romans in wartime and politics. They used it as a security practice to encode messages that can deceive the enemy.
Small, white bumps that are present on the skin may be keratosis pilaris, otherwise known as keratin spots, which is caused by keratin accumulating underneath the skin, as reported by WebMD. Keratosis pilaris is a harmless skin condition, and the bumps can appear basically anywhere on the body like on the thighs, facial regions, buttocks and arms.
Milia happen when the skin doesn't exfoliate, or shed dead cells, properly. That white bump is the actual plug of skin cells and oil, hanging about so close to the skin's surface that it's very visible. Milia can occur at any age, from newborn to 110 years old. Some people are just more prone to developing them than others. Most milia just appear, for no apparent reason.