Plug a secondary wireless router (hardlined to main router which your WeMo is associated with) into the WeMo Switch. When kids get their chores done etc... you can turn their internet access on by sending a text with this string. (Do not plug your main router which should be associated with WeMo plug, into the WeMo plug, otherwise triggers will turn on or off access to your WeMo switch as well.)
If
New SMS sent matches search
This Trigger fires every time you send an SMS on your Android device that matches a search you specify.
Then
Turn on
This Action will turn a WeMo Switch on. If the WeMo Switch is already on, it will remain on.
Explore more great ways to automate Android SMS and WeMo Smart Plug