Doorknobs run the gamut from fantastically ornate antiques to low-profile, unobtrusive sets you can buy at ... backplate mounted onto the door that conceals the knob’s internal hardware.

Consumer Reports doesn’t test push-to-open door knobs, but we do test smart locks ... create an account, and set up your new smart lock. Then, enable the auto lock and unlock feature.

The BioKnob replaces your existing doorknob, and registered users just brush their fingerprint across the knob to unlock the door. Accordingly ... it’ll store up to 100 sets of fingerprints.