PIN Generator

Truly random PIN codes with weak patterns filtered out - no 1234, no repeated digits, no obvious years.

PIN length
Block weak patterns sequences, repeats, years, palindromes

Where PINs Still Rule (and Why They Get Away With 4 Digits)

A 4-digit PIN has only 10,000 combinations - Laughable next to a real password. PINs survive because they never fight alone; hardware enforces the guess limit:

  • Bank cards - The chip swallows the card after 3 wrong tries. An attacker gets a 0.03% shot, not a brute-force session.
  • SIM cards - 3 tries, then the PUK lock. Same principle.
  • Phones - iOS and Android add escalating delays and optional wipe-after-10. That's why a 6-digit phone PIN is genuinely secure against guessing - But not against someone who watched you type it.
  • Door keypads - Often the weak spot: no lockout, plus worn buttons that reveal which four digits are in play. With 4 known digits there are only 24 orderings.

The rule that falls out: the PIN's job is to be unguessable within the try limit. Random beats memorable-but-predictable every time, and the same PIN must never guard two different things.

Choosing a Safe PIN

The most common PINs are shockingly predictable

Studies of leaked PIN databases show 1234 alone covers about 10% of all 4-digit PINs, and the top 20 PINs cover more than a quarter. Dates are the other big offender - Any PIN starting with 19 or 20 is likely a year, which shrinks the search space dramatically.

1234
~10.7%
1111
~6.0%
0000
~1.9%

Frequencies from the classic DataGenetics analysis of 3.4M leaked PINs.

PIN safety tips

  • Use 6 digits where allowed - A random 6-digit PIN is 100× harder to guess than 4.
  • Never reuse your bank PIN on your phone lock or door code.
  • Don't derive PINs from birthdays, anniversaries or postcodes.
  • Store PINs in an encrypted manager like the Password Wallet instead of a notes app.
  • For full accounts, use a real random password and add 2FA codes on top.
  • Human-chosen PINs fail for the same reason as the most common passwords: predictability.

How to Use the PIN Generator

1

Choose a length

Four digits where the device demands it; six or more wherever it's allowed - Each digit multiplies the search space by ten.

2

Keep weak-pattern blocking on

It rejects sequences, repeats, palindromes and year-like PINs - The categories that cover most human-chosen PINs.

3

Generate and memorize

A random PIN takes an evening of use to become muscle memory; don't write it on the card it protects.

PIN length vs. brute-force resistance

LengthCombinationsWith 10-try lockoutNo throttling (100/sec)
4 digits10,0000.1% success per theftunder 2 minutes
6 digits1,000,0000.001% success~3 hours
8 digits100,000,0000.00001%~12 days
12 digits10¹²negligible~317 years

PIN Generator - FAQ

Is 0000 really that common?
Analysis of 3.4 million leaked PINs (DataGenetics) found 1234 alone accounts for nearly 11%, and the top 20 PINs cover about 27%. A thief who gets three guesses at a stolen phone starts with those.
Should my phone PIN and bank PIN be different?
Yes, always. Your phone PIN is typed in public dozens of times a day and is the most shoulder-surfed secret you own. If it also unlocks your bank card, one observation compromises both.
Why does the generator reject some PINs?
With smart filtering on, it rejects ascending/descending sequences, all-same and paired digits, palindromes, and PINs that look like years - Roughly the top quarter of human-chosen PINs that attackers try first.
Are 4 digits ever acceptable?
With hardware lockouts (SIM cards, bank cards that swallow after 3 tries) 4 digits is fine - The lockout does the work. Without throttling, 4 digits falls in minutes, so use 6+ for phones and anything software-based.

More questions about passwords and security? Browse the security guides.

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