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This lion can send you an SMS. Groundlab, in conjunction with Living with Lions and Lion Guardians, developed this tracking collar that utilizes a GPS/GSM module to transmit lions’ locations via SMS to researchers and Maasai herders. This open source system aims to help conservationists protect the last 2,000 lions living in the wild in Southern Kenya, and safeguard the Maasai herders’ cattle, restoring Maasai land to a working ecosystem. Photo courtesy of Groundlabs.
Ethernet and WiFi are handy ways to talk to people and things on the Internet, but there’s a great big chunk missing: the mobile telephone network. Nowadays, telephony and the Internet are so intertwined that it doesn’t make sense to talk about them separately. It’s getting increasingly easy to connect physical devices other than mobile phones through mobile phone networks. In this chapter, you’ll learn how to connect these two networks, and when it’s useful to do so.