I think if it's the amount of metal that is inaccessible to the outside. Something like the Haven lock that is bolted to the floor, makes a lot of sense.
That of course requires a way of opening that is digital.
I'll think of the pros of digital locks:
+ The proliferation of protocols makes master keys almost impossible.
+ Faster update cycles when encryption gets cracked.
+ Keys that are handed out to household members or visitors with potential losses can be easily retracted.
+ The above separation of concerns. The way to keep someone out should be separate from the way to ask for permission to enter.
+ The easier integration with other security layers such as face recognition, voice recognition, etc.
Against forced entry, standard cylinder locks are inherently weak, because they're just not big enough. It's often possible to force the cylinder to turn, shearing off the pins. Especially if the pins are brass. Locks need to be much larger than usual to resist forced entry. Here's a classic mechanical prison door lock.[1] It's a straightforward lever lock, but it's far larger.
There used to be a thing for "detector" lever locks; if you push a lever too far, it trips the detector, and you have to put in a key and turn it the wrong way to reset before you can try again. Those were once claimed to be unpickable. They're not, but it slows things down a lot.
That prison lock is huuge! And when you think about the fact that this is made to protect against brute force applied by people with essentially no tools, you realise how puny ordinary locks are against a determined intruder.
Then again, windows are also ridiculously weak when you think of it like this.
Locks are sometimes symbolic - "Don't go here!". If somebody does break a lock, then the insurance folks will take that as evidence of forced entry and pay damages (if something was stolen). Some symbolic locks are even make of plastic - like circuit panel tags and locks.
There are good door and window locks, but they're more common in areas with worse problems than the US. Israel has some good door locking systems, from Mul-T-Lock and Superlock. The doors look like ordinary residential doors, but they're steel doors in welded steel frames with bolts that extend into the frame at top, bottom, and both sides.
I think if it's the amount of metal that is inaccessible to the outside. Something like the Haven lock that is bolted to the floor, makes a lot of sense.
That of course requires a way of opening that is digital.
I'll think of the pros of digital locks:
+ The proliferation of protocols makes master keys almost impossible.
+ Faster update cycles when encryption gets cracked.
+ Keys that are handed out to household members or visitors with potential losses can be easily retracted.
+ The above separation of concerns. The way to keep someone out should be separate from the way to ask for permission to enter.
+ The easier integration with other security layers such as face recognition, voice recognition, etc.