That's also why I suggested that you place two proximity detectors
along a single path.  The order in which they activate then indicates
ingress or egress.  In fact, you can simply set the inner-most
detector to trigger on-campus-presence, and the outermost detector to
set off-campus presence, since the most recent one to activate will
indicate ingress or egress.  In the case of ingress, activating the
outermost detector should simply set the current state (off-campus),
then the inner detection sets on-campus presence, and in the case of
egress, the innermost detector should set the current state
(on-campus), and then at a slightly later time, the outer detector
sets his presence to off-campus.

The key then is to figure out all possible paths that Chris uses to
enter and exit campus and set a pair of detectors on each (positioned
sequentially).  Right?

On Mon, Mar 30, 2015 at 7:51 PM, Curt Lundgren <[email protected]> wrote:
> We're actually looking at NFC enabled mag stripe cards for student ID, door
> access, etc.  Great technology, unfortunately there aren't any affordable
> readers that have sufficient range to detect passage through a doorway, and
> even if they did, the direction of travel is not indicated.
>
> Tile is cool technology, at least until the battery dies.
>
> I wasn't suggesting the transponder be implanted in the phone, but in Chris.
> Yes, it's a bit harsh,  Like I say, he's resistant…
>
> On Mon, Mar 30, 2015 at 7:44 PM, Andrew Farnsworth <[email protected]>
> wrote:
>>
>> An aircraft transponder is a bit harsh [and would drain your smartphone
>> battery like you wouldn't believe] but have you considered either an RFID
>> tag or a Tile (https://www.thetileapp.com/) or similar?  This would allow
>> you to detect them coming and going and react accordingly.
>>
>> Andy
>>
>> On Mon, Mar 30, 2015 at 8:36 PM, Curt Lundgren <[email protected]> wrote:
>>>
>>> Sorry John - I mis-read your message at first.  Yes, he wants 'out of
>>> office' calls to go to the work phone and roll over to voice mail.
>>>
>>> On Mon, Mar 30, 2015 at 7:33 PM, Curt Lundgren <[email protected]>
>>> wrote:
>>>>
>>>> Not quite, John.  With a few exceptions our phone system Emails
>>>> voicemail recordings as MP3 attachments.  I found a script 'sendmailmp3'
>>>> that intercepts the .WAV format outgoing message.  Strips it apart, 
>>>> converts
>>>> the WAV to an MP3 using LAME, then reassembles the outgoing message and
>>>> passes it along to sendmail.
>>>>
>>>> The dream is to have the phone system magically know that Chris is in or
>>>> out of the building and react accordingly.  The reaction, directing calls
>>>> one way or another, is easy.  The hard part appears to have a method of
>>>> detection that doesn't cause excess battery drain.
>>>>
>>>> I've tried to convince him to have an aircraft transponder implanted,
>>>> but he's resistant to the idea.
>>>>
>>>> On Mon, Mar 30, 2015 at 7:19 PM, Alex Smith (K4RNT)
>>>> <[email protected]> wrote:
>>>>>
>>>>> Maybe then log out when you arrive, and log in when you leave?
>>>>>
>>>>> " 'With the first link, the chain is forged. The first speech censured,
>>>>> the first thought forbidden, the first freedom denied, chains us all
>>>>> irrevocably.' Those words were uttered by Judge Aaron Satie as wisdom and
>>>>> warning... The first time any man's freedom is trodden on, we’re all
>>>>> damaged." - Jean-Luc Picard, quoting Judge Aaron Satie, Star Trek: TNG
>>>>> episode "The Drumhead"
>>>>> - Alex Smith
>>>>> - Huntsville, Alabama metropolitan area USA
>>>>>
>>>>> On Mon, Mar 30, 2015 at 7:11 PM, John F. Eldredge <[email protected]>
>>>>> wrote:
>>>>>>
>>>>>> According to what he said, he wants to use his mobile phone, rather
>>>>>> than his desk phone, while at work, and his work desk phone while not at
>>>>>> work. I am guessing this is probably because he spends a good part of his
>>>>>> work day away from his desk, and wants calls to his work phone during
>>>>>> off-hours to roll over to voice mail instead of routing to his cell 
>>>>>> phone.
>>>>>>
>>>>>>
>>>>>>
>>>>>> On March 30, 2015 7:04:12 PM CDT, "Alex Smith (K4RNT)"
>>>>>> <[email protected]> wrote:
>>>>>>>
>>>>>>> How about adding your mobile number to your PBX, and logging into
>>>>>>> your desk phone when you're there? If you're logged out, it forwards to 
>>>>>>> your
>>>>>>> mobile.
>>>>>>>
>>>>>>> " 'With the first link, the chain is forged. The first speech
>>>>>>> censured, the first thought forbidden, the first freedom denied, chains 
>>>>>>> us
>>>>>>> all irrevocably.' Those words were uttered by Judge Aaron Satie as 
>>>>>>> wisdom
>>>>>>> and warning... The first time any man's freedom is trodden on, we’re all
>>>>>>> damaged." - Jean-Luc Picard, quoting Judge Aaron Satie, Star Trek: TNG
>>>>>>> episode "The Drumhead"
>>>>>>> - Alex Smith
>>>>>>> - Huntsville, Alabama metropolitan area USA
>>>>>>>
>>>>>>> On Mon, Mar 30, 2015 at 6:37 PM, John F. Eldredge
>>>>>>> <[email protected]> wrote:
>>>>>>>>
>>>>>>>> The approach I would probably use for this would be to have a couple
>>>>>>>> of scripts that would send some command to the Asterix server. The 
>>>>>>>> first
>>>>>>>> one, triggered when my phone connected to the work network, would set 
>>>>>>>> the
>>>>>>>> Asterix server to reroute the phone calls. The second script, 
>>>>>>>> triggered when
>>>>>>>> I set my cell phone to car mode, would set the Asterix server to route 
>>>>>>>> the
>>>>>>>> calls to my desk phone.
>>>>>>>>
>>>>>>>>
>>>>>>>> On March 30, 2015 2:37:06 PM CDT, Chris McQuistion
>>>>>>>> <[email protected]> wrote:
>>>>>>>>>
>>>>>>>>> Curt and I were discussing this idea this morning and it seems so
>>>>>>>>> obvious that I'm sure someone is already doing this and there are 
>>>>>>>>> probably
>>>>>>>>> already some good ways of accomplishing this.
>>>>>>>>>
>>>>>>>>> Here's the idea.
>>>>>>>>>
>>>>>>>>> When I'm at work, I'd like our phone system (Asterisk-based
>>>>>>>>> Elastix) to just route incoming calls over to my cell phone number, 
>>>>>>>>> instead.
>>>>>>>>> I've got unlimited minutes and it is always on me.
>>>>>>>>>
>>>>>>>>> When I leave work, I'd like the call routing to route to my desk
>>>>>>>>> phone, as usual.
>>>>>>>>>
>>>>>>>>> It seems like this shouldn't be too hard to accomplish.  If nothing
>>>>>>>>> else, IFTTT could be used with the iOS Location or Android Location 
>>>>>>>>> channel
>>>>>>>>> to determine my geo-location.  From there, I have to DO SOMETHING 
>>>>>>>>> with that
>>>>>>>>> information, and then have Elastix act on it.
>>>>>>>>>
>>>>>>>>> This is where I'm stuck.  My best ideas so far are to create a new
>>>>>>>>> file in Dropbox or append a line in a Google Spreadsheet when I'm 
>>>>>>>>> entering
>>>>>>>>> or leaving the geo-location.  This seems a little kludge-y to me.
>>>>>>>>>
>>>>>>>>> Anyone got a better idea of how to accomplish this goal?  It isn't
>>>>>>>>> really important.  It's just one of those ideas that I've had for a 
>>>>>>>>> long
>>>>>>>>> time and I can't seem to let it go until I figure out how to do it...
>>>>>>>>>
>>>>>>>>> Chris
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> John F. Eldredge -- [email protected]
>>>>>>>> "Darkness cannot drive out darkness; only light can do that. Hate
>>>>>>>> cannot drive out hate; only love can do that." -- Martin Luther King, 
>>>>>>>> Jr.
>>>>>>>>
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>>>>>>>
>>>>>>
>>>>>> --
>>>>>> John F. Eldredge -- [email protected]
>>>>>> "Darkness cannot drive out darkness; only light can do that. Hate
>>>>>> cannot drive out hate; only love can do that." -- Martin Luther King, Jr.
>>>>>>
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>>>>>
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Tilghman

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