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iPhone complex passwords with only numbers iOS devices
If you're like me, you decided not to use a 'complex passcode' on your iPod touch (or iPhone) because you can see each letter of the passcode as you type it, making it easy for someone to learn your passcode. Well, recently I decided to try a complex passcode with only numbers. I discovered that if the passcode contains only numbers, the iPod will use an all-number keypad like the 4-digit passcode.

Here are a couple of screenshots to illustrate how this looks:





[crarko adds: I tested this, and it works as described.]
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iPhone complex passwords with only numbers | 9 comments | Create New Account
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iPhone complex passwords with only numbers
Authored by: landis on Jan 31, '11 08:18:05AM

Excellent hint - thanks for this one!



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iPhone complex passwords with only numbers
Authored by: juggularity on Jan 31, '11 08:55:25AM

It also works on the iPad.



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iPhone complex passwords with only numbers
Authored by: jjardoino on Jan 31, '11 09:12:03AM

I don't really find any advantage : if someone can see each last letter on the screen as you tape, someone can see your screen and it's easy too to see each number on the keypad, it's the number in blue :-)

---
jjardoino
France
http://www.graffitix.fr



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iPhone complex passwords with only numbers
Authored by: Anonymous on Jan 31, '11 09:26:37AM

Exactly. The guy over there recording your keystrokes with his camera will be able to replay numbers far easier than a complex password with letters, symbols, and numbers. Make it even harder by "mistyping" a character or two before backspacing on them.



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Security flaw?
Authored by: jasonq on Jan 31, '11 11:21:42AM

Wow! If the iPhone knows that the password is completely numeric, this implies that either:

a) The password is stored somewhere in a readable form
b) A flag is set marking the password as numbers only when first introduced.

Case (a) would be very bad and the best case scenario for case (b) is that there is a much smaller pool of characters to attack with brute force.



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Great hint!
Authored by: rodneyweston on Jan 31, '11 11:54:37AM

Thanks for sharing this. It is relatively easy for people to guess a 4 digit number based on seeing one or two of them. Putting in a 6-8 digit number makes the phone more secure without being as frustrating as a a text password.



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iPhone complex passwords with only numbers
Authored by: designr on Jan 31, '11 12:05:13PM

Is some stranger gonna follow you around with a camera waiting for you to enter your Passcode? Then steal your iOS device?

If you have a unique Passcode on your iOS device, a thief would have to memorize your Passcode AND steal your iOS device to make use of your Passcode. If you DON'T have a unique Passcode on your iOS device, they'd still need to know where you live.

I feel a little uncomfortable entering my Passcode in a movie theater. But, really. Where else? And, are there people in your life who are just waiting to jack your contact list? (You DO use 1Password, DON'T you??)

Are you sleeping with the enemy?



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iPhone complex passwords with only numbers
Authored by: JBCheong on Jan 31, '11 03:48:48PM

Thanks for the hint.

A 4 digits numeric password won't work as intended. You'll need at least 5 digits to make this work.

I wonder what's the max number of digits possible though. :-)



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iPhone complex passwords with only numbers
Authored by: asmeurer on Feb 01, '11 09:09:02AM

In my opinion it's easier for someone to see a numeric password than an alphanumeric one when you enter it. Having it more than four digits probably helps, though.



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