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What is the best type of smart lock? (lemmy.dbzer0.com)

submitted 3 months ago by [email protected] to c/[email protected]

57 comments fedilink hide all child comments

Hello Lemmy!

I have moved to a walkable area and no longer need to have my car keys on me all the time. My landlord has put in a crappy 4 digit combination style door lock, but said I could change it.

What is the best kind of keyless door lock that I can use instead? Ideally one with decent enough security to be as good or better than a key?

Thanks for your input!

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[–] [email protected] 2 points 3 months ago (1 children)

How is it only 24? What am I missing? 0-0-0-0 to 9-9-9-9, no?

[–] [email protected] 1 points 3 months ago* (last edited 3 months ago) (1 children)

This is where I got that number from, and it assumes that there are no repeated buttons.

https://socratic.org/questions/how-do-you-figure-out-the-number-of-combinations-in-4-digit-numbers

[–] [email protected] 1 points 3 months ago (2 children)

Ah, ok, so there's only 4 numbers to work with, and the code has to be a length of 4 as well? Can numbers not be repeated? It should be 4^4 I believe, because you can do 1-1-1-1, 1-1-1-2 etc.

[–] [email protected] 1 points 3 months ago (1 children)

Their assumption is that it is four digits long and the person knows which four digits but not the order.

[–] [email protected] 3 points 3 months ago

Ah, ok. So it's not just trying all combinations. The numbers could be worn out from pressing over and over, for example.

[–] [email protected] 1 points 3 months ago* (last edited 3 months ago)

Assuming the numbers go from 0 to 9 (those included) and can be repeated, it must be 10 * 10 * 10 * 10 = 10000 combinations :-)