Any locksmith who knows anything will tell you that there is no such thing as a pick-proof lock.
Although Medeco is a high quality lock it is only possible to say that it is pick resistant.
Just as water proof means that a product is impervious to water penetration, pick-proof would mean that a lock is impervious to being picked.
Medeco locks are *difficult* to pick, but that does not make it impossible. It is usually not practical to even attempt to pick any high security lock as there are much more effective means of gaining entry - the most obvious being an unlocked door or an unsecured window.
Physical security is a habit rather than the latest 'fashion' in lock manufacturing. Keep doors and windows closed and secured. Keep track of who has keys and where they are. As soon as a key is mislaid or gets into the wrong hands, get your locks rekeyed. Don't lend keys to tradesmen unless they are patent protected copy resistant keys. Get the best locks you can afford and make sure they are used - at least it will slow the buggers down.
High security locks will stop many casual criminals, but absolutely nothing will stop a determined intruder - several years ago I had a brick built building that had been completely secured with window grilles, high security locks, re-inforced doors. A great deal of my stock (consisting of high security locks) was removed through the hole in the wall produced by an 18 wheeler that was reversed into it. I'm not suggesting that evil Dave has access to an 18 wheeler, I use this just as an illustration to prove that a determined criminal cannot and will not stopped.
Sources for information? Over 25 years of locksmithing experience in the UK and US.
Anyhoo, rant over - just don't ask me to sell you a 'fire-proof' safe
Maybe I should just requote Mr Knightrider with a minor suffix - Medico makes a good lock that can't be picked
EASILY