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I'm one of today's best-selling computer book writers, with more than 15 million books in print.

This website keeps you up-to-date on my books, and your computers. Each week, I answer a reader's question on-line.

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Tag: ssid

How does my neighbor know my favorite Walmart store?

Q: While on Walmart’s website, I recently picked the closest store location. I share my neighbor’s wireless Internet signal. And now my neighbor sees the same Walmart store that I picked. When I change the closest Walmart on my computer, it changes on his computer; when he changes the closest Walmart on his computer, it’s […]