Free tool

Pattern lock strength checker

How many possible patterns are there on a 5×5 grid, and how long would guessing take?

Dots in your pattern

Why longer patterns are stronger

Each extra dot multiplies the number of possible patterns. TwoSafe also slows every guess down by running your pattern through 600,000 rounds of PBKDF2, so brute-forcing a long pattern takes impractically long.

Tips

Use 8 or more dots with at least one change of direction
Don't reuse your phone passcode
Turn on invisible pattern if people can see your screen

Add this tool to your website

Free to embed on your blog or site. Copy the code below:

<iframe src="https://twosafe.app/embed/pattern-strength-checker/" title="Pattern lock strength checker" width="100%" height="520" style="border:1px solid #eee;border-radius:8px" loading="lazy"></iframe>
<p style="font-size:13px">Pattern lock strength checker by <a href="https://twosafe.app/tools/pattern-strength-checker/">TwoSafe</a></p>

Pattern lock strength checker

Why longer patterns are stronger

Tips

Add this tool to your website

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