Erick Vils <<email>> writes:

Today I flew with my HTC smart phone (with GPS integrated) and http://www.trackr.eu  software installed. Two hours of online flight transmitted over Internet to Trackr website at (http://www.trackr.eu/user/erick.vils/live). More info (in Portuguese) in Vils Brothers Blog (http://blog.vils.com.br/2008/09/conseguimos-nossa-primeira-transmisso.html).

I invite you to visit our website http://www.vils.com.br/. Except for the blog, we create a English version of every webpage.

Trackr uses your data plan to send data from your Smart phone, not SMS messages. This makes sense in the US where SMS is expensive. Of course, it isn't sending data to your retrieval's phone, like Relirescue does.