Top positive review
9 people found this helpful
Not the best locks for safeguarding valuables, but they have their uses
on September 13, 2015
Like many people, I've read the articles and seen the videos about cracking the combinations of Master locks. I was curious to learn how difficult it was, so I bought several different models of Master combination locks.
Using the methods I had seen online, I tried to determine the combinations, and I was successful, using two methods that yielded the three numbers, or a small range of possible numbers. (I determined the first two numbers using the method developed by Samy Kamkar - it's supposed to also yield the third number, but I was not always able to get the third number that way, so I used another method that requires finding 12 locking points to determine the third number and help verify the first two numbers.) Determining the combination isn't that difficult, but it does take some time and effort. By the fourth lock, I was doing it in about 15 minutes. Someone who practiced could probably learn to crack a combination in much less time than that. Knowing what I know now, I would not recommend a Master combination lock for school or gym lockers or anywhere where valuables are being protected. However, these locks are very inexpensive, and for situations where valuables are not involved and you only want to discourage someone from taking the time to crack a combination, the Master locks are fine.
By the way, cracking the combination of a Master lock is a very enjoyable mental exercise that's very satisfying when you pull on the shackle and it releases.