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Cristiano Ronaldo poses in front of a 19m high billboard during the global launch of the CR7 by Cristiano Ronaldo Underwear line - 

It's time for Silicon Tally. How well have you kept up with the week in tech news?

This week we're joined by Kara Miller, host of WGBH’s Innovation Hub.

Follow Ben Johnson at @@TheBrockJohnson