Technologies

Mac Owners: Use Your iPad as a Second Monitor for Your Computer

If your computer’s screen isn’t enough, use your iPad as a secondary display.

Even if you have a large Mac screen, it may not always be enough. Many people invest in a second monitor to get some breathing room when they’re gaming, streaming and multitasking. However, if you don’t want to spend money on another device that takes up space, you may not have to — with an iPad, you can get dual displays for free.

As long as you have a Mac and iPad that are compatible, you can quickly and easily connect the two Apple devices and use the iPad as an extra display for your Mac computer. Using Sidecar, which comes built-in to supported devices, you can either extend your MacOS desktop or just mirror it onto your iPad, equipped with touchscreen controls to seamlessly use the two devices together. Here’s what you need to know.

In the market for an iPad? Here is a list of the best iPad choices for 2023 and the best deals on iPads.

Requirements to use your iPad as a second display

As mentioned above, both of your devices need to support Sidecar, which is the feature that allows you to use your iPad as a second monitor for your Mac. For your Mac, you must be running MacOS Catalina or later and it has to be one of the following models:

MacBook Pro (2016 or later)
MacBook (2016 or later)
MacBook Air (2018 or later)
iMac (2017 or later and Retina 5K, 27-inch, Late 2015)
iMac Pro
Mac Mini (2018 or later)
Mac Pro (2019 or later)
Mac Studio

And for your iPad, it must be running iPadOS 13 or later and be one of the following models:

iPad Pro
iPad (6th generation or later)
iPad Mini (5th generation or later)
iPad Air (3rd generation or later)

It’s best to update your devices to the latest software available to avoid any issues. Also, both devices must be logged in to the same Apple ID account, using two-factor authentication.

If you plan on going wireless, the two devices must be within 30 feet of one another. You can also use your USB to connect the two devices, with the advantage of being able to also charge your iPad while it’s in use as a second monitor.

Share your entire Mac desktop to your iPad

Depending on what software update you have on your computer, sharing your computer desktop to your tablet may vary. If you’re running MacOS Big Sur or later, click the Display icon in the menu bar at the top right. In the menu that appears, choose your iPad.

If you’re on MacOS Catalina, you’ll instead click on the AirPlay icon in the menu bar and then select your iPad. If for some reason you don’t see the AirPlay icon, click the Apple menu in the top right and go to System Preferences > Displays and check Show mirroring options in the menu bar when available.

Click the Display option in the menu bar to find your iPad.

Screenshot by Nelson Aguilar/CNET

Once your Mac and iPad are connected, you have several options to choose from that appear in the Display/AirPlay menu:

Mirror Built-in Retina Display: Mirror your exact desktop to your iPad. This will shift your computer desktop to look more like your iPad.
Use As Separate Display: Use the iPad as an extension to your desktop. To use your iPad display, drag any window or files from your Mac computer to the right of your screen, which will take you to the tablet. To go back to your computer, simply drag your cursor back to where you came from.

Share only one Mac window to your iPad

Alternatively, you can quickly share a window instead of dragging it over to your iPad. For example, you could share your web browser in Safari or what you’ve jotted down in your Notes. To do this, simply hover your mouse cursor over the green full-screen button that appears on the top left of most windows. After a second of hovering, you should see an option that says «Move to iPad,» which will share that window to your tablet. You can share multiple windows, in succession, to your iPad.

Hover over the full-screen button to send that window to your iPad.

Screenshot by Nelson Aguilar/CNET

Using the sidebar controls, gestures and Touch Bar on your iPad

Once your screen is shared over to your iPad, a set of controls will appear on the left side of your iPad, which are sidebar controls you’ll commonly see on your Mac. That includes, from top to bottom:

Menu bar: Show or hide menu bar when in full-screen
Dock: Show or hide dock
Command: Double-tap to lock key
Option: Double-tap to lock key
Control: Double-tap to lock key
Shift: Double-tap to lock key
Undo: Undo last action
Keyboard: Show or hide keyboard
Disconnect: Disconnect iPad from Mac

In addition to these Mac controls, you can also use a number of swipe gestures to control certain things on the second monitor (you won’t be able to use the touchscreen as usual though). That includes swiping with two fingers to scroll, pinching in with three fingers to copy, swiping left with three fingers to undo and more.

And finally, you may also be able to use the Touch Bar, if the application on your iPad is compatible. For instance, if you move Safari over to the iPad, you’ll see Touch Bar controls to go back and forward, use the search bar, flip between tabs and open a new tab. In Messages, you would see controls to create a new text, send an emoji and predictive text. The Touch Bar may not appear for every app you use on your iPad.

This is what your iPad will look like as a second monitor.

Screenshot by Nelson Aguilar/CNET

If you don’t want to use the Sidebar or Touch Bar controls, you can also get rid of them. On your Mac, click on the Display icon in the menu bar, and underneath your connected iPad, you should see Hide SideBar and Hide Touch Bar. Click on either or both options to hide the controls from your iPad.

Using your iPad while connected to your Mac

Even if you’re using your iPad as a second monitor, you can still swipe up to exit the Sidecar application and use your iPad as usual. In your dock, you’ll see a blue icon with two monitors on it — this is Sidecar. To go back to using your iPad as a second monitor, tap on the Sidecar app icon in the dock.

You can use your iPad as usual, even when connected to a Mac via Sidecar.

Screenshot by Nelson Aguilar/CNET

If you’re interested in learning more about what your iPad is capable of, check out how to declutter your iPad dock by removing this annoying feature and nine things to do immediately after you get a new iPad.

Technologies

iOS 17 Cheat Sheet: Your Questions on the iPhone Update Answered

Here’s what you need to know about new features and upcoming updates for your iPhone.

Apple’s iOS 17 was released in September, shortly after the company held its Wonderlust event, where the tech giant announced the new iPhone 15 lineup, the Apple Watch Series 9 and the Apple Watch Ultra 2. We put together this cheat sheet to help you learn about and use the new features in iOS 17. It’ll also help you keep track of the subsequent iOS 17 updates.

iOS 17 updates

Using iOS 17

Getting started with iOS 17

Make sure to check back periodically for more iOS 17 tips and how to use new features as Apple releases more updates.

17 Hidden iOS 17 Features You Should Definitely Know About

+15 More

See all photos

Technologies

Get Ready for a Striking Aurora That Could Also Disrupt Radio Communications

Don’t expect the storm to cause a lingering problem, though.

A geomagnetic storm is threatening radio communications Monday night, but that doesn’t mean you should be concerned. In fact, it may be an opportunity to see a colorful aurora in the night sky.

The National Oceanic and Atmospheric Administration has issued a geomagnetic storm watch after witnessing a coronal mass ejection from the sun on Saturday. The watch, which was issued over the weekend and will expire after Monday, said the onset of the storm passing over Earth on Sunday night represented a «moderate» threat to communications. As the storm continues to pass through, it could deliver a «strong» threat on Monday night that could cause radio communications to be temporarily disrupted during the worst of it.

Even so, NOAA said, «the general public should not be concerned.»

A coronal mass ejection occurs when magnetic field and plasma mass are violently expelled from the sun’s corona, or the outermost portion of the sun’s atmosphere. In the vast majority of cases, the ejection occurs with no real threat to Earth. However, in the event the ejection happens in the planet’s direction, a geomagnetic storm occurs, and the Earth’s magnetic field is temporarily affected.

In most cases, geomagnetic storms cause little to no disruption on Earth, with radio communications and satellites affected most often. In extreme cases, a geomagnetic storm can cause significant and potentially life-threatening power outages — a prospect that, luckily, the planet hasn’t faced.

Switching poles

Every 11 years, the sun’s magnetic poles switch, with the north pole and south pole swapping positions. During those cycles, the sun’s activity ramps up as it gets closer to pole-switching time. The height of its activity is called solar maximum, and scientists believe we either may be entering the solar maximum or may be already in it.

During periods of heightened solar activity, sunspots increase on the sun and there’s an increase in coronal mass ejections, among other phenomena. According to NOAA, solar maximum could extend into October of this year before the sun’s activity calms and it works towards its less-active phase, solar minimum.

Even when geomagnetic storms hit Earth and disrupt communications, the effects are usually short-lived. Those most affected, including power grid operators and pilots and air traffic controllers communicating over long distances, have fail-safe technologies and backup communications to ensure operational continuity.

But geomagnetic storms aren’t only about radios. In most cases, they also present unique opportunities to see auroras in the night sky. When the storms hit, the plasma they carry creates a jaw-dropping aurora, illuminating the night sky with brilliant colors. Those auroras can be especially pronounced during the most intense phases of the storm, making for nice stargazing.

If you’re interested in seeing the aurora, you’ll need to be ready. The NOAA said the «brunt of the storm has passed» and even if it lingers into Tuesday, there won’t be much to see after Monday night.

Technologies

Last Total Solar Eclipse for 20 Years Is Coming: How to See and Photograph It

It’s your last chance until 2044.

Get your eclipse glasses ready, Skygazers: the Great American Eclipse is on its way. On April 8, there’ll be a total eclipse over North America, the last one until 2044.

A total solar eclipse happens when the moon passes between the Earth and the sun, blocking the sun and turning an otherwise sunny day to darkness for a short period of time. Depending on the angle at which you’re viewing the eclipse, you may see the sun completely shrouded by the moon (called totality) or some variation of it. The more off-angle you are and the further you are from the path of the eclipse, the less likely you’ll be to see the totality.

The 2024 total solar eclipse will happen on Monday, April 8. The Great American Eclipse will reach the Mexican Pacific coast at 11:07 a.m. PT (2:07 p.m. ET), and then traverse the US in a northeasterly direction from Texas to Maine, and on into easternmost Canada. If you want a good look at it, but don’t live in the path of totality, you shouldn’t wait much longer to book accommodation and travel to a spot on the path.

Or how about booking a seat in the sky? Delta Airlines made headlines for offering a flight that allows you to see the entire path of totality. Its first eclipse flight, from Austin, Texas, to Detroit sold out quickly. But as of Monday, Delta has added a second flight from Dallas to Detroit, which also covers the path of totality. The airline also has five flights that will offer prime eclipse viewing.

Not everyone can get on one of those elusive eclipse-viewing flights. Here’s a look at other options to nab a chance to see this rare sight and what to know about it.

Total solar eclipse path

The eclipse will cross over the Pacific coast of Mexico and head northeast over mainland Mexico. The eclipse will then make its way over San Antonio at approximately 2:30 p.m. ET on April 8 and move through Texas, over the southeastern part of Oklahoma and northern Arkansas by 2:50 p.m. ET.

By 3 p.m. ET, the eclipse will be over southern Illinois, and just 5 minutes later, will be traveling over Indianapolis. Folks in northwestern Ohio will be treated to the eclipse by 3:15 p.m. ET, and it will then travel over Lake Erie and Buffalo, New York, by 3:20 p.m. ET. Over the next 10 minutes, the eclipse will be seen over northern New York state, then over Vermont. By 3:35 p.m. ET, the eclipse will work its way into Canada and off the Eastern coast of North America.

Best places to watch the Great American Eclipse

When evaluating the best places to watch this year’s total eclipse, you’ll first want to determine where you’ll have the best angle to see the totality. The farther off-angle you are — in other words, the farther north or south of the eclipse’s path — the less of an impact you can expect.

Therefore, if you want to have the best chance of experiencing the eclipse, you’ll want to be in its path. As of this writing, most of the cities in the eclipse’s path have some hotel availability, but recent reports have suggested that rooms are booking up. And as more rooms are booked, prices are going up.

So if you want to be in the eclipse’s path, and need a hotel to do it, move fast. And Delta’s eclipse-viewing flight from Dallas to Detroit has just four seats left at the time of publication.

Eclipse eye safety and photography

As with any solar eclipse, it’s critical you keep eye safety in mind.

During the eclipse, and especially during the periods before and after totality, don’t look directly at the sun without special eye protection. Also, be sure not to look at the sun through a camera (including the camera on your phone), binoculars, a telescope or any other viewing device. This could cause serious eye injury. Sunglasses aren’t enough to protect your eyes from damage.

If you want to view the eclipse, you’ll instead need solar viewing glasses that comply with the ISO 12312-2 safety standard. Anything that doesn’t meet that standard or greater won’t be dark enough to protect your eyes. Want to get them for free? If you’ve got a Warby Parker eyeglasses store nearby, the company is giving away free, ISO-certified solar eclipse glasses at all of its stores from April 1 until the eclipse, while supplies last.

If you don’t have eclipse viewing glasses handy, you can instead use indirect methods for viewing the eclipse, like a pinhole projector.

Read more: A Photographer’s Adventure With the Eclipse

In the event you want to take pictures of the eclipse, attach a certified solar filter to your camera. Doing so will protect your eyes and allow you to take photos while you view the eclipse through your lens.

There’s also a new app to help you both protect your eyes and take better photos of the eclipse on your phone. Solar Snap, designed by a former Hubble Space Telescope astronomer, comes with a Solar Snap camera filter that attaches to the back of an iPhone or Android phone, along with solar eclipse glasses for protecting your eyesight during the event. After you attach the filter to your phone, you can use the free Solar Snap Eclipse app to zoom in on the eclipse, adjust exposure and other camera settings, and ultimately take better shots of the eclipse.

2024 eclipse compared to 2017

The last total solar eclipse occurred in 2017, and many Americans had a great view. Although there are plenty of similarities between the 2017 total solar eclipse and the one coming April 8, there are a handful of differences. Mainly, the 2024 eclipse is going to cover more land and last longer.

The 2017 eclipse started over the northwest US and moved southeast. Additionally, that eclipse’s path was up to 71 miles wide, compared with a maximum width of 122 miles for this year’s eclipse. Perhaps most importantly, the moon completely covered the sun for just 2 minutes, 40 seconds in 2017. This year, maximum totality will last for nearly four-and-a-half minutes.