Viraj Puri at a computer
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US schoolboy creates bullying heat map

After 13-year-old Viraj Puri's younger brother was bullied he created an online bullying heat map to help parents make better choices. The BBC's Jane O'Brien reports.

The use of big data has come under increasing scrutiny since the former intelligence contractor Edward Snowden leaked documents about the US government's electronic spying programmes last year.

But it's not just governments who can use and access the digital information we generate online every day. Corporations use big data to gather information about consumer preferences and to sell products.

And now Viraj Puri, a 13-year-old schoolboy from Virginia, is hoping to harness its power - to tackle bullying. He showed the BBC's Jane O'Brien the website - currently in development - which would enable families to pinpoint bullying incidents.

Filmed by Allen McGreevy; edited by Bill McKenna.

Living Online is a series of video features published every Tuesday on the BBC News website which look at how technology converges with culture and all aspects of our daily lives.