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Re: Sensing stuff
- To: <ukha_d@xxxxxxx>
- Subject: Re: Sensing stuff
- From: "Dr John Tankard" <jtankard@xxxxxxx>
- Date: Fri, 31 Mar 2000 09:50:30 +0100
- Delivered-to: rich@xxxxxxx
- Delivered-to: listsaver-egroups-ukha_d@xxxxxxx
- Mailing-list: contact ukha_d-owner@xxxxxxx
- Reply-to: ukha_d@xxxxxxx
There are other much more elaborate methods of preventing a iButton being
defeated, you can use on with EPROM in the can and write your own extra
code, which is used for the next unlock when you programme a new code. This
means that unless someone gets hold of your iButton, produces a hardware
copy and gets back to the door before you, his key will be out of date. His
copy would have to very smart because the door would not unlock if it could
not write back the next code. I would think that people with the knowledge
to construct the devise are gainfully employed anyway.
John
> -----Original Message-----
> From: Kieran Broadfoot [mailto:kieran.broadfoot@xxxxxxx]
> Sent: 31 March 2000 08:44
> To: ukha_d@xxxxxxx
> Subject: [ukha_d] Re: Sensing stuff
>
>
>
> Doesnt the iButton zero the contents of its memory when tampered with?
I
> believe this is one of its security features to enable them to be
> used as keys
> or money purses etc.
>
> Thanks
> Kieran
>
> >However, the missus doesn't agree, and thinks it's just going to
> leave the
> >door open to every Tom Dick and Harry, complete with flashing
> "Rob Me" sign.
>
> ---
> Kieran J. Broadfoot.
> Equities Unix Administration.
> Goldman Sachs, London.
> Phone: 0207 774 5946
>
>
>
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