Body Odor and Brain Waves: 5 Cool New ID Technologies | Livescience

Many driver’s licenses and passports have holograms and other types of sophisticated security embedded in them, but for the most part, people still heavily rely on ID cards to prove who they are. Biometric identification technologies, such as fingerprinting and iris scanning, are already being used to speed up security clearance at several airports in the United States. Iris scanning is also gaining support in the health care industry, as a way to prevent fraud and combat identity theft. Now, ID tech is moving into new realms, with devices that could distinguish individuals by their veins, brain waves and even body odor. Here are five emerging alternatives to traditional identification:

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