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On 09/11/2010 11:46, Michael Holland wrote:
<blockquote
cite="mid:AANLkTinBkYNj1D46-OMtAxyMqabpCPO2rnrCpoQkOJ=p@mail.gmail.com"
type="cite">
<pre wrap="">On Tue, Nov 9, 2010 at 11:10 AM, James Bromberger <a class="moz-txt-link-rfc2396E" href="mailto:james@rcpt.to"><james@rcpt.to></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Think of it as "multiple IO pins on a USB device plugged into my Linux box"
more than as a standalone system.
</pre>
</blockquote>
<pre wrap="">
OK, now I understand. Sounds easier than hacking a USB mouse/joystick
for inputs.
I'd like to do something along those lines on my new house too.
Was thinking of bluetooth for RFID, so it can unlock the front door
when it detects an authorised phone.
I'm sure Perl has a nice Bluez interface, doesn't it?
Since I carry the phone anyway, why not? Is that a bad idea?
</pre>
</blockquote>
I tried this with a USB blue tooth adaptor. I found that it sucked
the life out of the system to poll the presence of the phone nearby.
But then that was a naive attempts about 4 years ago, and bluez has
updated a fair bit since then. But it makes sense to me. Only issue
is that if you're just walking around your house, you don't want the
front door to just open by surprise! Especially at 2am. :) I
suppose you could always add some logic of "<tt>if $time > 7:00
and $time < 24:00</tt>". RFID, by contrast, can be a little
more closely proximity based (ie, in the SmartRider passive RFID
sense where you present your card to the reader).<br>
<br>
I quite liked the Mac's ability to lock screen when your phone was
out of range. That was neat. <br>
<br>
I was thinking of putting an RFID tag under my car, and a reader
embedded under the driveway. But its a litle expensive for the
reader; the proximity would probably be in the order of 40 cms, and
the driveway above the sensor may be a little heavy or restrictive.
Also, just parking the card in the driveway could trigger the garage
door/gate/whatever when you don't want it to. But could be good to
log comings and goings. Anyone know if there is already RFID in
vehicles these days? Just think of the data you could log... :) oh,
and the privacy concerns.... but at the same time, how easy to embed
a reader in each lane of the freeway at each entrance and exit, and
calculate average speeds, and just generate an infringement, direct
debit you... (The UK has been doing average speed checks with ANPR
- Automatic Number Plate Recognition - along the M4 and other
stretches of motorway/freeway for some time now).<br>
<br>
We (Nick B, Mark T and I, plus others) installed an electronic door
slam into the UCC back in the 1990's. Easy enough to install into
the soft wood of Cameron hall's partitioning. Now I just need not
tell my Mrs I plan on hollowing out the door frame of our house when
she's out one day... :)<br>
<br>
<div class="moz-signature">-- <br>
<strong>James Bromberger</strong><br>
Aus Mobile: +61 422 166 708<br>
Email: james <i>_AT_</i> rcpt.to, Web: <a
href="http://www.james.rcpt.to/">www.james.rcpt.to</a><br>
MSN: james<i>_AT_</i>rcpt.to, AIM: JamesEBromberger, Skype:
james.bromberger
<small>(<i>_AT_</i> -> @)</small></div>
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