Glenn FleishmanSenior Contributor, Macworld

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Glenn Fleishman is the author of dozens of books, including his newly released A Practical Guide to Networking, Privacy, and Security in iOS 10, a book that has information and step-by-step advice on connecting to and managing networks, and securing your data and your privacy. He's a senior contributor to Macworld, where he writes the Private I and Mac 911 columns and hosts the Macworld podcast, and contributes regularly to many periodicals.

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How to create the inverse of a Smart Album’s selections in Photos

If you want everything that's not in a Smart Album, you have to tag everything in that album.

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Upgraded to Photos? Here’s what you can do with that old iPhoto library

A reader wonders about hard links, iPhoto, and Photos, and what happens when the iPhoto Library gets deleted.

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How to install an app in macOS Sierra that’s not signed by a developer

Sierra makes a small change in launching less-validated software, but it's still there.

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Podcast 534: The Mac book that isn't a computer

Apple's new design book—and its attitude lately—are pretty annoying, but Susie's still really into the MacBook Pro with Touch Bar.

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Certs up! Apple and Google take certificates more seriously

As we near 2017, browsers start complaining more about rotten website security, but it’s never been easier to assure yourself you’re safe.

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How to free up space used by iMovie files

Folders from versions past may be full of gigabytes of duplicates or unwanted files.

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What to do when Apple tells you there’s not enough storage to re-sync iCloud Photo Library

Turning iCloud Photo Library off and back on forces a full resync and requires twice as much storage.

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Podcast 533: The Mac of today, the Mac of tomorrow

Susie and Glenn discuss the underwhelming "Escape Edition" MacBook Pro and wonder about the next big Mac innovation.

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How to unmount drives automatically when closing a Mac’s lid

A little Mac app can help attached drives when you put your laptop to sleep.

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Best iPhone 6/6s camera lenses: Add-on lenses to help you take the ideal photo

The price range, quality, and diversity of add-on lenses for iPhones is enormous. But you may have to buy into one ecosystem.

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Photojojo Telephoto Phone Lens review: Magnetically-attached lens falls short

A $20 lens falls below a level of quality needed even for snapshots.

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Hitcase Snap review: iPhone camera lenses offers solid performance at a decent price

While not perfect, Hitcase balances cost and quality in its wide-angle and macro lenses.

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Photojojo Iris Phone Lens review: Decent lenses but attachment system is difficult to master

This iPhone lens system has snap, but lacks crackle or pop.

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ExoLens with Optics by Zeiss review: Superb lenses for iPhone photography

The price tag might deter some, but the lens quality is worth it for those who want the best iPhone system.

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Olloclip 4-In-1 Lens review: A mighty mite iPhone lens still performs well in its price class

A nice combination of lenses in an utterly compact space outperform expectations at this price.