Glenn FleishmanSenior Contributor, Macworld

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Glenn Fleishman is the author of dozens of books, including mostly recently Take Control of Slack Basics, a book on mastering and becoming efficient in Slack. 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 manually exclude images from a Smart Album in Photos for OS X

A reader wants to customize the results of a Smart Album, and we found a workaround.

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App Store subscriptions don't solve problems for most developers

While any app has the potential to offer subscriptions under Apple's new guidelines, most apps can't take real advantage.

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FAQ: How Apple’s new App Store subscriptions affect you

Apple’s pre-WWDC surprise announcement of changes to the App Store’s subscription policy has left a lot of questions in the air. We have answers for many.

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Nope, you can't tell if someone has received your Mail Drop file

Apple doesn't provide an acknowledgement loop for email attachments sent by Mail Drop, and you can't "remove" files from Mail Drop either.

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Bluetooth's soft limits in OS X: Count your devices

A reader finds a common problem: Too many Bluetooth devices connected to one Mac can perform inconsistently.

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How to convince a partner or spouse to delete old emails

A reader writes in with a marital dispute that Mac 911 won't take sides on, but will provide a technical answer.

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Security or marketing: Allo and the price of listening in

Google's upcoming messaging app offers a strange choice between intelligent agent and strongly protected communications.

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How to set a custom order in an album in Photos for OS X

My 9-year-old came to me with a question about arranging photos in an album in OS X.

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Your top questions to Mac 911—and some answers

Many people write in with similar problems. Here's a super-FAQ to help solve the most common iOS 9, iCloud, and El Capitan issues.

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How to exclude your iCloud Photo Library from an iTunes backup

A few readers find even with iCloud Photo Library enabled, an iTunes backup of an iPhone or iPad still includes all locally stored photos.

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Podcast 510: No more 16GB iPhone?

It's a smorgasbord of topics as we head into WWDC, from ticks and tocks to crowdfunding to cancer rats. But the thing we're most excited about is the rumored demise of the 16GB iPhone.

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How to export a Live Photos movie into OS X

Apple leaves it opaque how to extract the movie version of an iOS Live Photos.

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Crowdfunding tech can serve backers poorly, even when the thing gets made

Another spate of failed and much-delayed high-profile crowdfunded projects should give pause to potential funders, especially of giant hardware projects.

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Podcast 509: Apple and Google and AI and the future

Google I/O is over, and WWDC is about to happen—it's the perfect time to compare Google's approach to Apple's, and wonder what will happen if we move from a mobile-first world to an AI-first one.

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Should two-factor authentication let me verify via a single device?

A reader wonders if something's wrong, because Apple's second-factor system lets him approve a connection from a seemingly odd place.