Next, an attacker again lifts the locked shackle, this time with less force, while turning the dial clockwise. The remaining two locations represent locked positions. One of them will be ignored as it is exactly between two whole numbers on the dial. Before the dial reaches 11, there will be three points where the dial will resist being turned anymore. The exploit involves lifting up a locked shackle with one hand while turning the combination dial counterclockwise starting at the number 0 with the other. Feel free to use this list as a tool.There's a vulnerability in Master Lock branded padlocks that allows anyone to learn the combination in eight or fewer tries, a process that requires less than two minutes and a minimal amount of skill to carry out. However, whether or not there is a better distribution, this is the one we have on these locks. If you find one, I’d be curious to see it. I suspect that there are more effective letter distributions possible that would generate even more words, but after a quick attempt at doing better, I fell a bit short. I reached out to Master Lock to ask how they chose this letter distribution, but they could not be reached for comment. The letters on each disk are pretty curious, especially when you notice oddities like the “J” in the first disk or the “Y” in the second disk.įrom a letter frequency standpoint, these are not great letters to drop in those positions. You can look up the meanings in the integrated dictionary/thesaurus or on the Internet. TEA is faster and more convenient than word lists in book form such as crossword completers, crossword dictionaries and crossword keys.” Is There A Better Distribution? These answers are classified by their familiarity, so you always see the most likely ones first. “TEA comes with a database of over 6 million words and phrases including the title index for the English version of Wikipedia. This is the kind of software that you use if you’re really serious about winning a major puzzle hunt. Analysis Methodologyīragg used TEA Crossword Helper, which is anagramming software on steroids. I’ve included all of the columns in the spreadsheet because even the less useful columns have some interesting entries… They are just few and far between. The next three columns are decreasing useful, with the fifth column being words from Wikipedia (which includes acronyms, initialisms and the like).Įach list omits the words found in the previous lists. These are still words, but they are obscure or old English. It has 695 words.Ĭolumn B is the “ENABLE” word list. Words are created, usage shifts, and words fall into disuse.Ĭolumn A is the common English word list. There is no way to generate a single answer to the question “how many English words can this lock create?” English is a constantly evolving language. A few minutes later he sent me back a spreadsheet filled with words. I asked Rich Bragg of ClueKeeper how he’d determine all the words these locks could generate. (I’m looking at you BURY, STAR, & SAND).Įach fixed-disk letter Master Lock uses the following configuration:ĭisk 4: K Y R S T L N E D H What Words Can This Distribution Generate? The same half-dozen words show up a whole lot. I hope to see more variation in solutions used on these locks in escape rooms. How many 4-letter words can these Master Locks create? In the escape room community, the three best known fixed-disk locks are:Īll of these fixed-disk letter locks have the exact same letter distribution, which made me wonder: (You cannot swap the order of the disks.) Master Lock has many different word combination locks and cable bike locks on the market that have fixed disks.
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