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Thank you for posting this! I've been trying to figure out what it was called for years!

There was an attack I read about for garage door openers or numeric entry doors where they didn't have an enter button. So entering they entered the De Bruijn sequence and had the answer in a small fraction of the time compared to trying each combo once and hitting "Enter".



This might be what you're talking about:

http://samy.pl/opensesame/




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