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Encryption and Device Signal / Placement This lesson covers device signal and device placement and how they have a role in creating a secure WiFi connection. This is not as important as encryption but it is still a necessary concept. Device placement has to do with where devices are placed in a WiFi network and how strong the signal needs to be. The wireless signal needs to be prevented from bleeding out of the office where it can be vulnerable to hackers who might be sitting in the parking lot with a laptop trying to hack into the network. Device placement is integral to allowing employees to access the network all the while keeping important information safe.