After looking at the Earth Search website, their LogiTraxx shows to be CDMA compatible which is what Verizon's network works on. All of the other products work on GSM networks such AT&T. The ones that work off of GSM must work just like the cellular backup on an alarm system. I've installed cellular backup for alarm systems where a GSM signal is not available, but a GSM one is, and a company does not want to use the GSM network. I've used Raven X from (www.getwirelessllc.com). In order to get it to work over the Verizon network, you have to setup an account through Verizon and insatll one of their SIM cards that any company can do. I've got $320 invested in this stock and this seems like a very interesting concept that they got going on here. Hopefully it all works out. LogiTraxx shows to report only every 24 hours, so hopefully they have another product that is in development.