Technology has come a long way in the past 200 years, with biometrics and the internet of things developing a tight connection. Fingerprints and facial recognition are now used to authorize payments and unlock cars. Some are based on signals received from the brain and heart, although, aging could cause errors at some point. It is not only a matter of privacy and surveillance, but also a question of payment- and data security. Spoof attacks are probably right around the corner, just waiting to happen.”]
Source: https://www.bitdefender.com/blog/hotforsecurity/biometrics-and-our-future-as-a-cashless-economy/