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Building Wireless Sensor Networks Using Arduino by Matthijs Kooijman

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Making your network secure

Using wireless communication in your project is very convenient, but it also opens up the possibility of others sniffing your data, or even sending packets into your network to influence your project. For this reason, securing your network with proper encryption methods is an important step that is best taken right away (since it is easy to keep postponing it otherwise).

Fortunately, the XBee modules make securing your network easy and handle all the details automatically. There are a few concepts you need to understand, though.

When you enable security in your XBee module (by setting the EE configuration value to 1), most packets being sent will be encrypted (preventing others from reading the messages) and protected ...

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