Canon EOS 70D Instruction Manual page 165

Security
Wireless LAN radio waves can be easily intercepted. For this
reason, we recommend activating encrypted communication in the
access point settings.
Connecting with an Interface Cable
When [53: Wi-Fi] is set to [Enable], interface cable connection is
disabled. Set it to [Disable] and then connect an interface cable.
When the camera is connected to a computer, printer, or any other
device via an interface cable, settings for [Wi-Fi] cannot be
changed. Disconnect the interface cable before changing any
settings.
Using an Eye-Fi Card
When [53: Wi-Fi] is set to [Enable], image transfer using an Eye-
Fi card is disabled.
Movie Shooting
Movie shooting is disabled when [53: Wi-Fi] is set to [Enable].
Wireless LAN Notes
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