It gives me a sense of tunnel vision.
The book begins and ends with the visits to give the impression of a tunnel into their ancestors and family history. I believe in going backwards into the past - I felt I was digging a tunnel back to the past.
If you go to a coffee shop or at the airport, and you're using open wireless, I would use a VPN service that you could subscribe for 10 bucks a month. Everything is encrypted in an encryption tunnel, so a hacker cannot tamper with your connection.
The night is a tunnel. . . a hole into tomorrow.
He didn't like it all that much when he first came - all the rubbish and the rush - but it was growing on him, it wasn't half bad. Coming to the city was like entering a tunnel, he said, and finding to your surprise that the light at the end didn't matter; sometimes in fact the tunnel made the light tolerable.