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Ask HN: I'm quadriplegic – can you help me with my security?

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Ask HN: I'm quadriplegic – can you help me with my security?

#1
Hey Hacker News,

I've run out of places to look so I hope you guys can help me with this. I would like to:

1. Securely login to my various websites 2. Securely lock and unlock my MacBook Pro.

Easy, right?

Except I'm quadriplegic. I use DragonDictate[1] to input text, and invoke keyboard shortcuts verbally, and SwitchXS[2] with a single button switch[3] (to move the mouse around and switch between applications etc). With these I have nearly total control over my laptop.

I use a password manager and once I've spoken the master password out loud the rest of my password challenges are automated. This is necessary, but not so secure as my laptop is then just open to anyone who picks it up. But I can't password lock my whole laptop because OS X requires that password before it will load up any applications, and I can't put a password in without my apps.

I was thinking of getting a YubiKey, but for that I would need to touch the sensor on the key to activate everything, but as you might imagine the whole quadriplegic thing gets in the way of this!

Some other sort of hardware master key, maybe? What do you guys think?

A word on the adversary: I want my personal information secure from casual passers-by who after having a quick peck on the keyboard would more than likely give up; I'm not looking for PRISM dodging security here :-)

Anyway, any help would be greatly appreciated!

[1]: http://www.nuance.co.uk/for-individuals/by-product/dragon-for-mac/dragon-dictate/index.htm [2]: http://www.assistiveware.com/product/switchxs [3]: http://www.ablenetinc.com/Assistive-Technology/Switches/Buddy-Button-and-Big-Buddy

Re: Ask HN: I'm quadriplegic – can you help me with my security?

#2
Would something like Keycard[1] work for locking the screen when you're not nearby?

I wonder if it could be set to lock at boot unless your phone (or BT headphones or whatever) is nearby.

I doubt this can be all that secure since it can be downloaded from the App Store, I'm pretty sure that means it can be force quit (it could not prevent this key combo since its restricted in the sandbox). It may be just enough.

[1] http://www.appuous.com/products/mac/keycard.html

Re: Ask HN: I'm quadriplegic – can you help me with my security?

#4
Hi! I'm on the train with bad internet right now and so can't go looking but have you considered face recognition software using the laptops camera? There must be an app that takes a look at the webcam when a password challenge is presented.

Anyone know of anything?

Edit:

Found one! https://www.keylemon.com/download-other-versions/

Re: Ask HN: I'm quadriplegic – can you help me with my security?

#5
Just a thought but would a inverse keylogger work?

I would guess something like this- an arduino hooked up to something you can operate (BigBuddy?). This could then ask you for your PIN code (2 taps, 3 taps, 2 taps)

Once arduino is happy it will quirt a pre-stored key sequence into the USB port, acting as a keyboard, and unlock what you need.

I have no idea if it is really viable but its the best I have.

Re: Ask HN: I'm quadriplegic – can you help me with my security?

#6
There's an application that lets you lock individual applications, but which should allow you to unlock it with dictation, as the rest of the OS is still working. Mac App Blocker (http://knewsense.com/macappblocker/)

There's also QuickLock which was/is a workaround to lock OS X quickly without using the screen saver + immediate password requirement. http://www.quicklockapp.com/

Note: I haven't used either, I'm just googling and looking at videos.

Re: Ask HN: I'm quadriplegic – can you help me with my security?

#8
post #3

If you're not using whole disk encryption (or even partial encryption), then it doesn't really matter if you use a login password or not. The attacker can just clone the hard drive to gain access to your files.

> I want my personal information secure from casual passers-by who after having a quick peck on the keyboard would more than likely give up; I'm not looking for PRISM dodging security here

Re: Ask HN: I'm quadriplegic – can you help me with my security?

#9
Hi, do you have any movement or dexterity in your fingers at all? If so, please offer details of this or any other control you have that might be exploited. I have a colleague who once-upon-a-time built a system of low-force buttons and other goodies that enabled a quadriplegic person to work a telephone very effectively, as in they were subsequently employed to do some kind of work over the telephone. Would something like that be of use?

I think you might also be able to make use of a kinect or Andriod/iPhone and some eye-tracking.

Also, do you know of these guys? It's where my colleague worked about twenty years ago. http://www.tirrfoundation.org/

Re: Ask HN: I'm quadriplegic – can you help me with my security?

#10
Here's a simple idea (lacking in specific implementation details, sorry):

- Figure out how to add a text filter between DragonDictate and your system.

- Program the filter to look for a special sequence, e.g. "cipher_mode"

- When in cipher mode, feed characters through a simple cipher. E.g. A -> C, B -> D, etc. No passerby is going to be able to figure out what you're doing.

- When the filter sees "cipher_mode" again then it stops filtering.

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