Next iPhone feature?

Ive reading articles lately that suggests that Apple with implement a fingerprint scanner for security purposes. This also goes along with the acquisition of that security company (dont remember the name). I find this odd and unnecessary to an extent for most people. I can see this for government agencies that can use this manly for security and authentication but Apple does things that improve the smart phone and that is useful for most consumers????

Care to tell my why im wrong?

What are the other purposes for the fingerprint scanner?