Hi.
I'm not an expert in locksmithing, lockpicking and am definitely not trying to pick any lock.
I'm currently looking for a 40mm padlock that can secure my locker. Being a paranoid person who values my privacy and the security of my belongings, I hope to push the security level offered by my padlock to the extreme, never mind if under extreme circumstances, whoever want to gain access to my things in my locker illegally or covertly would resort to using a blowtorch to cut or explosives to blow open my locker. :)
So I went to a few hardware, home-fix and DIY shops to see what are available. But seems like the packaging offers little details as to how secure each lock really is in the real world. Some brand like Yale offers a vague numerical scale that denotes the security level and recommended use with 1 the lowest (deterrence only) to 10 (high security). Each brand try to tout itself as anti-picking, anti-prying, anti-sawing, anti-drilling, anti-blowing etc. but do they really stand up to lockpicking and brute force attacks on the lock?
The brands I saw are TriCircle (China), Yale, Magic Mart, Secure-Loc, Eye Brand and Abloy (4 to 5 times more expensive than the rest)? Is Abloy really the "unbreakable" lock for high security application?
So I hope to tap the real world experience of locksmiths who are involved in breaking and picking locks.
When deciding which brand, of padlocks to purchase and use, is there any general rule of thumbs or recommended brands that are proven to be more secure, reliable or resistent to lockpicking or brute force breaking. I definitely do not trust certain cheap locks made in China that can be easily pried open with a screwdriver, or picked by someone trained and skilled in lockpicking in 5 seconds.
What are the criterias to look at when assessing whether one lock is stronger than another? Are those locks with cylindrical/rounded keys more secure than those with flat keys? Are brass-bodied locks stronger/weaker than steel locks? When the shackles are marked with the word "Hardened", do they have to meet certain common criteria or standard i.e. could one brand definition of "Hardened" be softer than another brand? Are there some kind of locks or lock designs to avoid totally, because they are proven to be insecure and easily picked or broken by force?
Sorry for the long posting. I have a lots of questions in my mind about how to pick a good lock.