The trouble is very few of these can be found in the US as consumers here favor low prices and a 10/10 promise over any actual security.
The Kwikset smart key v3 can't be picked because you get no feedback until all pins are set. You can decode them one pin at a time with expensive specialized tools such as a micro camera put into the cylinder but they will keep someone out for a while so they do their job. You still need to cut a custom key to get in even when you decode it so it is time consuming.
A Medeco will keep out even an experienced lockpicker for a while since pins must be in the right rotation and the right heights.
Beyond that there are really good Disk Detainer locks like the Protec 2 that have no feedback until all discs are correct. There are 0 public confirmed defeats of them.
Beyond that you get into hybrid digital keys like the Cliq. Then you can combine an cylinder known to not have any defeats with a second set of pins that can only be engaged after an AES challenge/response between a microcontroller in the key and one in the lock.
These also have never been defeated.
There are also solutions like the Bowley lock that don't expose the tumblers to the outside world and can only be defeated with many hours of work making custom tools for that specific lock.
I could go on and on.
The reason you can't buy good locks at US hardware stores is fully because the uneducated masses rejected high security locks once companies like master lock pumped out $5 locks with 10/10 security ratings in spite of any informed child being able to open them.
I would love to see people like LPL put their lawyer hats on and sue these companies for dangerously deceptive advertising.
https://www.youtube.com/watch?v=qV8QKZNFxLw
There are a couple of (old) videos on Medeco locks:
https://www.youtube.com/watch?v=JmyC7KM5Qxk
https://www.youtube.com/watch?v=4fh6IHCr7uo
https://www.youtube.com/watch?v=avwt39uHDOQ
Related to the Disc Detainer (come for the tooling discussion, stay for the picking):
Linked by ryzvonusef: https://news.ycombinator.com/item?id=29367579
Of course if anyone did it, it would be huxley.
It feels like Bowley underestimated strong vibration attacks like that and didn't invest enough in spool/serrated pins.
I suspect this is correctable, but I wonder if it would work as well mounted in a sturdy door since the vibration is not directly connecting with the pins.
Protec2: Very very difficult to pick, however there are videos of a few picking it: https://www.youtube.com/watch?v=6zVSJ_wauwg (https://www.reddit.com/r/lockpicking/comments/edrrjo/hardest...) https://www.youtube.com/watch?v=AsG90UGRTpw (https://www.reddit.com/r/lockpicking/comments/mie59t/abloy_p...) https://www.youtube.com/watch?v=6UZ6tcvgd9U
The Protec2 I would trust far more than the Kwikset SmartKey V3, since it appears only several of the best of the locksport community have been able to pick it.
I couldn't find record of anyone opening a Cliq. I'd be hesitant to say that's because they are unpickable, though. I believe quite a number of the locksport community would not be very interested in attempting to open a Cliq as it isn't purely mechanical.
Still they are all well designed locks.
I recommend the smartkey v3 for people that need a lot of locks they can source quickly on a budget. The sidebar design is a real pain to defeat and if the lock is in a body with tight tolerances you may not be able to shim the sidebar at all. Without some kind of attack to tension the sidebar they can't be directly picked.
For those with more money to burn the Medecos are good security for dollar.
I put a couple Protecs on my luggage as tamper evidence devices so the TSA has to call me when they need to search it.
I would not bother with Protecs on a home as they are very expensive and there are generally better areas you can invest in home security for that kind of money but if you have a small number of ingress doors they are nice.
I don't think anything is unpickable/unbackable but when the time to defeat a particular lock someone has not seen before takes 10 minutes to hours and few if any in the world can do it I classify it as a "good" lock when the status quo can be defeated in seconds.
Does the TSA no longer open those locks with a grinder/bolt cutter?
I have never once had a lock cut. Only one flight ever did they call me for access but normally they don't bother.
YMMV.