Re: HomeVision access control???

["matt_miles_uk" <m_miles@xxxxxxx>]

ok,

so the reader picks up "asdfhasdfjhdgjkdfgk" from the card. 
Which
in turn is passed down the serial line to HV which authenticates it
(via a database of pre-swiped cards?) then outputs +5v to the door
contact for 30seconds say.

Next question.... does HV set an ID for each device?  How do i stop
HV from opening ALL the locks when it detects a recognised card?

And... any ideas what the HV script should look like?

Cheers,

Matt

--- In ukha_d@yahoogroups.com, "Tawn, Jonathan"
<jonathan.tawn@j...>
wrote:
> Fair point ... each card is unique ....
>
> Must be one of those "I'll over complicate things" days ...
>
>
> 		-----Original Message-----
> 		From:	Paul Gordon [mailto:paul_gordon@xxxxxxx...]
> 		Sent:	Thursday, 29 January, 2004 10:30
> 		To:	ukha_d@yahoogroups.com
> 		Subject:	RE: [ukha_d] Re: HomeVision access
> control???
>
> 		errr....
>
> 		Perhaps I'm missing the point here, but what does it
matter
> whether you can
> 		write to the cards or not?....
>
> 		Surely so long as you can READ something (anything)
off the
> card, and so
> 		long as that data is known to be unique to that card
(which
> seems likely if
> 		its a personal card), then surely that's all you
need to do
> to use it for
> 		personalised access control?
>
> 		Just swipe the card, discover what it reads out as a
serial
> string, then
> 		program that string into your HV script... what
difference
> does it make
> 		whether that string is:
>
>
>
"LKJHDISKSSDBCJSKAOIUW23423M3NOWSWE09SKN2320FQWWLKE09302394H232K342
34N2"
>
> 		as opposed to:
>
> 		"This is Fredd Bloggs so let him in"
>
> 		/confused!/
>
> 		Paul G.
>
>
> 		>From: "matt_miles_uk" <m_miles@b...>
> 		>Reply-To: ukha_d@yahoogroups.com
> 		>To: ukha_d@yahoogroups.com
> 		>Subject: [ukha_d] Re: HomeVision access control???
> 		>Date: Thu, 29 Jan 2004 09:59:16 -0000
> 		>
> 		>I didn't think of that!  Very good point - also
don't want
> the
> 		>police coming round and taking it off me!  I think
i'll try
> to find
> 		>someone who will program some cards for me!
> 		>
> 		>Cheers,
> 		>
> 		>Matt
> 		>
> 		>P.S
> 		>
> 		>As for HV or control how would that end work after
the
> ASCII text
> 		>has been input to the HV serial port?
> 		>
>
>
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