You can use biometrics, too

Biometric Technologies Are Competent To Use In Homes Or Any Establishments (World TVPC)

So as you can see using biometric scanners as a means to secure your home or office building is absolutely necessary. It is one of those things that you would be thankful for that human ingenuity worked towards your favor instead of against it.

Much of the discussion of biometrics tends to represent the technology as something foisted upon ordinary people by governments or corporations. That is changing.