'The Five' discusses Apple's new software update allowing users the opportunity to edit and unsend unwanted messages. Facial recognition and fingerprint verification are becoming common security features on our phones and now your breath may be a potential option for biometric security, according to a report published in Chemical Communications. Researchers from Kyushu University's Institute for Materials Chemistry and Engineering worked with the University of Tokyo and have developed an olfactory (smell) sensor that can identify a person by analyzing their breath, the report said. "Recently, human scent has been emerging as a new class of biometric authentication, essentially using your unique chemical composition to confirm who you are," first author of the study, Chaiyanut Jirayupat, said in a release. Bangkok, Thailand - December 12, 2015: Apple iPhone5s held in one hand showing its screen for entering the passcode. Researchers from Kyushu University's Institute for Materials Chemistry and Engineering who worked with the University of Tokyo developed an olfactory (smell) sensor that can identify a person by analyzing their breath, the report said.

Researchers at the University of Tokyo are using frog eggs to enhance what might seem like an unlikely element of robotics: olfactory sensing. By injecting the eggs with the DNA from various insects known for expressing keen senses of smell, the team was able to create a robotic nose that can detect molecules at levels as low as a few parts per billion. Eggs from the African Clawed Frog have been used in research before to express olfactory receptors, but they had not been integrated into an electronic sniffing system like this. By injecting the eggs with DNA from fruit flies, silk moths, and diamond back moths, the bioengineers were able to coax the immature eggs into producing the olfactory sensors of those insects, which are known for their ability to detect specific gases and pheromones. The eggs were then fitted between two electrodes, creating a sensor system that measured the current generated when certain molecules came in contact with the detector.