From Computerphile.

IP Location services almost work by accident rather than by design, Richard explains how they operate. Richard G Clegg is based at Queen Mary University of London.

Computerphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: https://jane-st.co/computerphile

This video was filmed and edited by Sean Riley.

Computerphile is a sister project to Brady Haran’s Numberphile. More at https://www.bradyharanblog.com