What is biometrics and how is it applied in everyday life?

It is very likely that in the last time you have used biometric technology even without knowing that it was about it. It has probably been to carry out a procedure, validate a transaction or access a site, among other possibilities. Do you remember it now? Don't worry. In case you don't remember and/or if you are still wondering what biometrics is, in the following lines we will tell you what it is all about.