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| It's still in development (doing pre-sales), the there's a startup company that's making radio-transmitting boluses.
http://wanderingshepherd.com/
Supposedly will let you track each cow's location, temperature, and even can do heat detection broadcast out on cellular network using a local base station. Battery life of 10 years and only $5/per device.
Might be one of those things that's too good to be true, but if it works as advertized... wow.
Here's an article about it:
http://www.edmontonjournal.com/business/tracker+invention+could+foi... | |
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