Instructables
Picture of boost WiFi signal for FREE!
this is how to boost your WiFi for freeee
 
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Step 1: Mateials

Picture of mateials
aluminium foil
WiFi

Step 2: Boost signal

Picture of boost signal
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take a piece of foil and fold in to a bit higher than antanea and position it so it reflects the signal in whatever direction you want it to go this works because metals even as thin as aluminium foil will reflect WiFi signals