Half a croissant, on a plate, with a sign in front of it saying '50c'
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gps alarm watch

instead of setting an alarm based on time, set it based on location
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A watch with a GPS receiver and coordinate entry that will trigger an alarm whenever the watch reaches those coords.

Could be used for reminders, eg. "Don't forget the groceries" when driving past the store.

dbday, Mar 02 2000

(?) Casio's GPS watch http://www.casio.co...x.cfm?act=10&ID=702
Casio should add this feature. Unfortunately, the watch can only continuously monitor GPS position for 10 hours. [egnor, Mar 02 2000, last modified Oct 04 2004]

geocorder http://www.halfbakery.com/idea/geocorder
Related GPS-based halfbakery idea. [egnor, Mar 02 2000, last modified Oct 04 2004]

Alternative ways of waking commuters http://www.halfbake..._20Commuter_20Waker
[Lemon, Mar 02 2000, last modified Oct 04 2004]

Lcron http://www.isi.edu/...RE/XCRON/index.html
Lcron is a small set of extensions to xcron that support location- and event-triggered actions. Location is primarily determined by network activity ... "print this job when I'm at work". [egnor, Mar 02 2000, last modified Oct 04 2004]

Geominder http://ludimate.com/products/geominder/
Baked into compatible cell phones [Acme, Aug 08 2005]

iNap GPS alarm clock http://hackaday.com...19/gps-alarm-clock/
iPhone app. [jutta, Nov 06 2009]

US8295851 http://www.google.com/patents/US8295851
This patent cites this idea. [jutta, Apr 01 2016]

[link]






       It would also be useful to have your mobile able to sound its alarm, or switch itself off when it moves from one cell area to another. i.e. use to wake you up when you train gets close to home.
rob, Mar 08 2000
  

       I like it! Could have alarms based on time AND location: "it's 6:00 -- you should be on the road by now" -- or even better, NOT sound any alarms when you're at the symphony.
syost, Mar 08 2000
  

       Good idea. GPS wouldn't work in tunnels though (think of all those sleepy commuters), so inertial navigation would have to added as a supplement.
Skinny Rob, Jun 19 2000
  

       This would also be very useful for when you fall asleep on the train home after a night on the piss. Set it to wake you up just before your stop.
Mickey the Fish, Jul 07 2000
  

       Try includinga reletively harmless, yet incredibly painfull shocking device. Maybe a buzzing or vibrating noise will be more marketable.
chem boy, Feb 06 2001
  

       It's a long time after March 2000, but my iPhone does this - I can tell Siri to remind me to buy X next time I'm near Y. Sometimes it even works.
MaxwellBuchanan, Apr 01 2016
  

       Same with Google Now/Keep. And both (should) do it with supported smartwatches too.   

       I remember from several years ago a smartphone app designed for those who sleep on buses, which would wake them up when nearing their destination. Could be the one [Jutta] linked to.
notexactly, Apr 01 2016
  

       That is cool that a patent would cite the HB.   

       Or maybe it just seems cool to me. Maybe it happens a lot. Probably it does, with my ideas posted here. And those ladies looking at me and giggling are the ones who filed those patents. Laugh it up, ladies! I put those ideas here for you!
bungston, Apr 02 2016
  

       Typing in 'Halfbakery patent citation' into a search engine will show that it happens quite a lot.   

       <edit> they actually only show up well on Google Patent Search rather than a more general search engine
TomP, Apr 04 2016
  
      
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