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List:       cryptography-randombit
Subject:    Re: [cryptography] [Cryptography]  Show Crypto: prototype USB HSM
From:       Ben Laurie <ben () links ! org>
Date:       2016-05-10 9:25:58
Message-ID: CAG5KPzymRoUaqcYgEBPLDtNY9a9x-T--QhBZo3_e=yrNg9Kprg () mail ! gmail ! com
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On 14 April 2016 at 00:16, Jerry Leichter <leichter@lrw.com> wrote:
> > > Yes, make it significantly smaller than the current form factor.
> > 
> > Ah.  OK, well, that is certainly doable, though how small you can make it is \
> > ultimately limited by the size of the display.  How small do you want it, and how \
> > much are you willing to pay?
> I wonder if one could get rid of the display per se and add some kind of MEMS \
> steerable laser to it.  The output would be projected onto some nearby surface.  \
> This could be physically much smaller. 
> People have built "virtual keyboards" using this idea- here's a random one:  \
> http://www.amazon.com/AGS-Wireless-Projection-Bluetooth-Smartphone/dp/B00MR26TUO/ref=sr_1_1?ie=UTF8&qid=1460589277&sr=8-1&keywords=laser+projector+keyboard
> 

Oh no they haven't - that's simply projecting a static image, its not steerable.
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