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"Once you create these tools, it's very tempting to use them, " says Jonathan Zittrain, a Harvard Law professor.
FORBES: Spotting Evil
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Once you have a handful of clear, high-leverage strategies, you can use them as a filter to decide what to do.
FORBES
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Once you have your list, use the app to tick off things as you pack them, or e-mail the list to other family members.
BBC: Seven trusted family travel apps