Don't sweat it for security

Sweat is the latest target of biometrics that might be useful for security. Jan Halámek of the University at Albany, New York, USA, has proposed a better method to securing gadgets including mobile and wearable devices, such as smart phones and smart watches. The approach relies on analyzing skin secretions – or sweat – to build an amino acid profile that is unique to the device owner. The profile would be stored within the device and used for identification purposes each time an attempt to unlock is made. Of course, the downside of this is that the device would have to have a physical add-on to the device to sample the user's sweat.