Most Common iPhone Passcodes (and lifehacking: faraday cage q, TMS update)

Guy uses free iPhone app to collect (anonymous) data on what 200,000 users chose as PINs to secure their app. The app’s setup & lock screens are identical enough that most people likely used the existing iPhone PIN. I suspect that the data generalizes to just about any four digit PIN.

Interestingly, the second most common is 2580, or moving vertically down the middle of the keypad.

In light of the more recent “how secure is the iPhone” web debates, I wonder how this would change if you could push multiple keys at once as part of a PIN. Those of you who’ve picked a Simplex lock — too few of you have, I think, it’s a wonderful thing to learn, very much like safe lock manipulation — will likely recognize the sequence “(2 4) 3.”

Lifehacking stuff:

The low-power transcranial magnetic stimulation / West German anti-Soviet-Electronic-Warfare gadget from two days ago passed a rudimentary test to control for the placebo effect! I noticed this afternoon that the focused-but-relaxed feeling was gone, and found the battery had indeed died. Good enough to get published in Nature? Maybe not. Good enough for 10 Euros worth of parts and an hour’s time to build it? Hell yes! Based on the amount of stuff I’ve gotten done since I built it, it’s my most effective lifehack so far. Highly recommended!

Physics & faraday cages — there are some anomalies in the EMG data for which one explanation could be that coming into contact with the mesh of the Faraday cage during the night reduces the shielding effect. Can anyone with a firmer understanding of E&M than I shed light on whether this makes sense?

Lastly, for the radio geeks, a neat link I found researching stuff for the electromagnet thing: http://www.vlf.it/kurt/elf.html (vlf.it is fascinating in general)

http://amitay.us/blog/files/most_common_iphone_passcodes.php

“In my last update to Big Brother Camera Security (Free), I added some code to record common user passcodes (completely anonymous, of course). Because Big Brother’s passcode setup screen and lock screen are nearly identical to those of the actual iPhone passcode lock, I figured that the collected information would closely correlate with actual iPhone passcodes.

In essence, this post is an homage to the well known Most Common Passwords on the Internet articles. Different articles pull from different sources, so naturally aren’t the same, but still demonstrate certain trends. Similar trends are evident in the data I present below.

Naturally, 1234 is the most common passcode: mimicking the most common internet passwords. To put this into perspective, these 10 codes represent 15% of all passcodes in use. Most of the top passcodes follow typical formulas, such as four identical digits, moving in a line up/down the pad, repetition. 5683 is the passcode with the least obvious pattern, but it turns out that it is the number representation of LOVE (5683), once again mimicking a very common internet password: “iloveyou.”

Interestingly, 1990-2000 are all in the top 50, and 1980-1989 are all in the top 100. I would interpret this occurrence as a subset of users that set their passcodes to the year of their birth or graduation.

[…]

As you can see, any passcode between 1930 and 2020 has a much higher likelihood versus the average (represented by ****): at minimum a 50% gain, at maximum a 2570% gain. This data implies a heavy age range of 11 – 21 year olds.”

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