Using simple passwords is one of the worst cybersecurity mistakes you're probably making, so changing a too-simple phone PIN code is one step in shoring up your defenses.

These work with a key but can also unlock with a PIN code, an app or a fingerprint. That way, you can still get in without a physical key or let someone else in whether you're there or not.

Or you could ditch the key entirely and opt for a digital deadbolt. These work with a key but can also unlock with a PIN code, an app or a fingerprint. That way, you can still get in without a ...