What is the identification of a user based on a physical characteristic, such as a fingerprint, iris, face, voice, or handwriting?

Biometrics

Explanation:

Biometrics -

It refers to the method to detect any individual on the basis of face , iris , fingerprints , voice and handwriting , is referred to as biometrics .

The method is most commonly employed for the purpose of attendance of the people entering or leaving the respective place .

As each person have different voice , face , fingerprint , hence faking a biomerics is very difficult .

Hence , from the given information of the question ,

The correct answer is biometrics .

a bad leader      

not  

cuba  

russia  

iraq  

el salvador  

explanation:

known as the land of volcanoes, el salvador has visit seismic tremors and volcanic movement. it is the main nation in central america that does not have a coastline on the caribbean sea. about portion of all salvadorans live in the wide open. they are poor and don't have power or running water in their homes. in 1525, pedro de alvarado, a lieutenant of cortés's, vanquished el salvador. el salvador, with alternate nations of central america, pronounced its freedom from spain on sept. 15, 1821, and was a piece of a league of central american states until the point when that association broke up in 1838.