Apple : Mac Tips: How to let Gatekeeper open Mac apps from unidentified developers

Mac Tips: How to let Gatekeeper open Mac apps from unidentified developers

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Have you ever downloaded an app on your Mac, only to be told you couldn't open it because it wasn't from the Mac App Store or wasn't from an identified developer? If so, you're experiencing Gatekeeper, a tool that debuted in the last release of OS X Lion that's designed to prevent questionable software from causing trouble on your Mac.

For some users, this can be a great feature that helps keep their Mac safe; however, for power users who know they are downloading apps from trusted sources, it may be imperative to disable this feature from time to time to install and run apps from developers that haven't signed their apps.

In this article, we'll show you the regular way to disable this feature, as well as how to do it from the command line without the need to delve into System Preferences. This is great for when you're remotely installing software on a Mac, or if you just like the command line.

Disabling Gatekeeper

To turn off Gatekeeper, navigate to your System Preferences > Security & Privacy. In the General tab, you'll see a section with the heading "Allow apps downloaded from." If you select "Anywhere" from the list that follows, then Gatekeeper will be disabled and you'll be able to open any app, regardless of where it was downloaded from. This is the least-safe setting for Mac security, however, and you should not leave the setting disabled like this unless you always download apps from trusted sources. For higher security, of course, you can select the "Mac App Store" or "Mac App Store and identified developers" options to keep Gatekeeper turned on.

Disable Gatekeeper

Checking the status of Gatekeeper

If you want check the status of Gatekeeper on your Mac without opening your system preferences, you can do so by opening the Terminal and typing the following command, followed by the return key:

spctl --status

Disable Gatekeeper

If the response is "assessments enabled," then Gatekeeper is active; it'll say "disabled" if it has been turned off.

Disabling Gatekeeper via Terminal

You can disable Gatekeeper from Terminal as well. Do so by typing this command, followed by the return key:

sudo spctl --master-disable

After specifying your administrator password, Gatekeeper will be disabled, and you will be able to install and run software on your Mac downloaded from anywhere online.

Disable Gatekeeper

If you ever wish to re-enable Gatekeeper through Terminal, then simply use the above command again, replacing "disable" with "enable." This will reactivate the Gatekeeper feature on your Mac.

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Updated: Buying Guide: 10 best laptops for students 2015

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Best laptops for students

Even for those who feel at home with their nose in a textbook, the end of summer break (or Winter recess) is a big bummer. But as much as it's a return to school and schedules, it's an opportunity. This is a fine excuse to invest in some fresh tech to make the coming academia-addled year a little more bearable.

If you're still reliant on a desktop, or if your laptop winces at the sight of a high-definition video lecture, it's time to look into an upgrade. And thankfully if you know where to look, it's possible to get a sleek and impressive notebook without blowing through your savings (or student loans).

We've pored through ourarchives from the past several months and picked the best laptops for school. Our short list spans a variety of budgets that range from power-sipping Chromebooks to help you with that 1,000 page dissertation to more powerful machines that'll do better at a dorm room lan party.

Update: The Dell Inspiron 13 7000 Series is an excellent candidate for students looking for an affordable, high performance hybrid convertible notebook with Intel's Core i7 processor.

1. Asus Zenbook UX305

A most affordable and excellent Ultrabook

Solid performance

Incredibly thin and light

Wonky video driver

Tinny speakers

Call it a MacBook Air knockoff all you want, the Asus ZenBook UX305 is one of the best and most affordable Ultrabooks available now.

Read the full review: Zenbook UX305

Best laptops for students

2. Acer Chromebook 15

Chrome OS comes to the big screen

Absolutely radiant display

All-day battery life

Sudden crashes

Tinny but serviceable speakers

The Acer Chromebook 15 asks if you need a big machine to just run a Chrome browser, and I say 'oh, yes.' The Chromebook 15 takes Chrome OS to new places as it's the first device to arrive with a 15.6-inch display and the first to come with Intel's newest Broadwell processor.

Read the full review: Acer Chromebook 15

Apple 13-inch MacBook Pro with Retina display (early 2015)

3. Apple MacBook Pro 13.3-inch with Retina Display

The fastest small MacBook Pro yet is a force of nature

Retina Display

Faster processor

Force Touch underdeveloped

Unchanged design

The 13-inch MacBook Pro with Retina display is an excellent option for students who may need more power than a Chromebook or a MacBook Air without sacrificing portability thanks to its long battery life, relatively light weight, and high resolution display. Students on a budget will be happy to know that they can get started right away as the MacBook Pro with Retina display ships with free copies of Pages, Numbers, and Keynote out of the box as well as iMovie, Photos, and GarageBand for basic, creative projects.

Read the full review: MacBook Pro 13-inch with Retina display

Acer Chromebook 15 C910

4. Acer Chromebook 15 C910

The colossus of Chromebooks

Fast processing speeds

Long battery life

Too heavy

Awkward keyboard

Don't be fooled by this fatso. The Acer Chromebook 15 C910 is a durable workhorse that will reward you for looking past its size in favor of its performance, long battery life and stylish good looks.

Read the full review: Acer Chromebook 15 C910

Best laptops for students

5. Apple MacBook Air 13-inch

Finally, battery life within our grasp

Fantastic battery life

Haswell processors

No Retina screen

Not user upgradeable

While it has yet to make the leap into Retina, this is still the laptop that the ultrabook aspires to, thanks to incredible battery life and AC Wi-Fi.

Read the full review: MacBook Air 13-inch

Best laptops for students

6. Asus ROG GL551

The best entry-level gaming laptop available

CPU: 2.5GHz Intel Core i7-4710HQ Processor (quad-core, 6M cache, up to 3.5GHz with Turbo Boost) | Graphics: Nvidia GeForce GTX 860M (2GB GDDR5 RAM); Intel HD Graphics 4600 | RAM: 16GB DDR3L (2x 8GB at 1600MHz) | Screen: 15.6" FHD (1920 x 1080), matte finish | Storage: 1TB HDD (7,200 rpm) | Connectivity: 802.11g Wi-Fi; Bluetooth 4.0 | Camera: 1.2MP, 720p webcam | Weight: 6 pounds | Dimensions: 15.0 x 10 x 1.3 inches (W x D x H)

Impressive performance

Solid build

Finicky screen

Rather thick

With a surprising amount of horsepower under the hood, you couldn't ask for more from the Asus GL551, save for maybe a better screen.

Read the full review: ROG GL551

Best laptops for students

7. Acer Aspire V7

Offering great all-round performance this is ideal for a student

CPU: 1.6GHz Intel Core i5-4200U (dual-core, 3MB cache, up to 2.60 GHz with Turbo Boost) | Graphics: Nvidia GeForce GT 750M (4GB DDR3 RAM); Intel HD Graphics 4400 | RAM: 8GB DDR3L RAM | Screen: 14-inch, 1920 x 1080 glossy IPS touchscreen | Storage: 500GB (5400 rpm with a 16GB SSD cache) | Connectivity: 802.11n Wi-Fi; Bluetooth 4.0 | Camera: 720p webcam | Weight: 4.41 pounds | Dimensions: 13.4 x 9.4 x 0.9 inches (W x D x H)

Seamless design

Gorgeous screen

Rough trackpad

Short battery life

A short battery life and an obnoxious amount of bloatware hold back this otherwise excellent notebook that tows the line between Ultrabook and gaming laptop.

Read the full review: Aspire V7

Read: Acer Aspire V7 review

Surface 3

8. Microsoft Surface 3

Thinner, lighter, quieter, cheaper

CPU: Quad Core Intel Atom x7-78700 processor (2MB Cache, 1.6GHz turbo boost to 2.4GHz) | Graphics: Intel HD Graphics | RAM: 4GB | Screen: 10.8-inch ClearType Full HD Plus Display (1920 x 1200) | Storage: 128GB | Connectivity: 802.11ac Wi-Fi; Bluetooth 4.0 | Camera: 3.5 megapixel front-facing camera; 8.0 megapixel rear-facing camera with autofocus | Weight: 1.37 pounds | Dimensions: 10.52 x 7.36 x 0.34 inches (W x D x H)

Display

Design

Keyboard

Storage

If you want the cheapest and most portable Surface tablet money can buy for lightweight computing tasks, the Surface 3 fits the bill. Power-hungry users should consider the low-end Surface Pro 3 instead.

Read the full review: Surface 3

Best laptops for students

9. Microsoft Surface Pro 3

Thinner, lighter, quieter, cheaper

CPU: 1.9GHz Intel Core i5-4300U (dual-core, 3MB cache, up to 2.9GHz with Turbo Boost) | Graphics: Intel HD Graphics 4400 | RAM: 8GB LPDDR3 | Screen: 12-inch, 2160 x 1440 multi-touch (ClearType, 3:2 aspect ratio) | Storage: 256GB | Connectivity: 802.11ac Wi-Fi; Bluetooth 4.0 | Camera: Two 5MP webcams (1080p HD video) | Weight: 1.76 pounds | Dimensions: 7.93 x 11.5 x 0.36 inches (W x D x H)

Sharp display and design

Huge Type Cover upgrade

Runs hot at times

Type Cover still optional

Not without its drawbacks, this is the brightest shining example of not only Microsoft's vision of a laptop-free future, but the entire laptop-tablet hybrid category.

Read the full review: Surface Pro 3

Lenovo ThinkPad E555

10. Lenovo ThinkPad E555

A ThinkPad, but without the price tag

Great keyboard

Decent performance

Poor battery life

Heavy

Forget Lenovo's Essentials range, the ThinkPad E555, bears all the qualities (well, almost) of the legendary ThinkPad family but without the price tag.

Read the full review: ThinkPad E555

Yahuui Blog

Tuesday, July 14, 2015