we don't allow kickstarter links on bikeforums anyway.

Never quite understood kickstarter campaigns for an existing product. "Tail it" seems to claim that the product exists, so how does it qualify?

There are a lot of bike trackers out there. If I was really worried about a bike I probably would buy a Spot. There are some trackers where the communication is crowd sourced, but that depends on a large population of the devices. In the U.S., I don't think you could count on open wifi for tracking. And using cell service for tracking would be expensive. I have seen companies that resell cell service for their internet of things devices, but if you do it on your own, it's like having another phone.