City folk might not think much about this one, but it’s actually a pretty good idea. Just don’t try it at home. Or on yourself.
Engadget found a Scottish company, Well Cow, that makes an electronic module that tracks conditions inside a cow’s stomach. Actually, just one part of a cow’s stomach: the rumen. (You do remember that bovine stomachs have four chambers, don’t you?) The module sends out pH and temperature data to a collar or device, which then transmits it to a smartphone or PC.
That sort of data is important to farmers, who can adjust cattle feed to prevent or fix indigestion and maximize growth or dairy production. The module stays inside the cow for 80 to 100 days.[youtube https://www.youtube.com/watch?v=odtfUQEYNgI#t=28]