As usual, the slot is perpendicular to the direction of movement. A block in its slot, pivoted to the hypotenuse block positions it. A special type of integrator, used at a point where only moderate accuracy was needed, was based on a steel ball, instead of a disc. It had two inputs, one to rotate the ball, and the other to define the angle of the ball's rotating axis. That axis was always in a plane that contained the axes of two movement pick-off rollers, quite similar to the mechanism of a rolling-ball computer mouse (in that mechanism, the pick-off rollers were roughly the same diameter as the ball). The pick-off roller axes were at right angles. A pair of rollers "above" and "below" the pick-off plane were mounted in rotating holders that were geared together. That gearing was driven by the angle input, and established the rotating axis of the ball. The other input rotated the "bottom" roller to make the ball rotate.
Although you need a paid Kaspersky Internet Security subscription to use all its features, some basic functionality is available for free. It's a top choice for Android antivirus apps. SMS-based two-factor authentication is a common option, but when a service supports authentication apps, you should use that option. Microsoft Authenticator, like other time-based, one-time passcode authentication apps, lets you add accounts via a numeric or QR code and use the generated codes to log in to your services. Microsoft's app excels in its simplicity and extra features such as cloud backup (for when you are moving to a new device) and an optional app lock. You either enter the number displayed in the app, a two-digit number displayed by the service you're trying to authenticate or simply hit Allow in the popup notification. With NordVPN you can rest assured that no prying eyes will see your internet traffic. This app sports an excellent interface, a handy server selection tool, and hundreds of available VPN servers across the globe.
However, some jailbreaks are tethered. A tethered jailbreak is only able to temporarily jailbreak the device during a single boot. If the user turns the device off and then boots it back up without the help of a jailbreak tool, the device will no longer be running a patched kernel, and it may get stuck in a partially started state, such as Recovery Mode. In order for the device to start completely and with a patched kernel, it must be "re-jailbroken" with a computer (using the "boot tethered" feature of a tool) each time it is turned on. All changes to the files on the device (such as installed package files or edited system files) will persist between reboots, including changes that can only function if the device is jailbroken (such as installed package files). In more recent years, two other solutions have been created - semi-tethered and semi-untethered. A semi-tethered solution is one where the device is able to start up on its own, but it will no longer have a patched kernel, and therefore will not be able to run modified code.
Something to look for: Some Android phones (for example, certain Samsung and Huawei phones) let you take “long” screenshots, where you can scroll the screen down and capture the entire page. Check your phone’s support pages if you think you might have that - it can be handy. Go to your Photos app. Tap on the three parallel lines in the top left corner. Press the side button and the volume-up button simultaneously. You’ll get a thumbnail image of your screenshot in the lower left corner. Tap on the image to make it larger; there will be editing tools below. Icons in the upper right corner let you delete it or share it. When you’re finished, tap “Done” in the upper left corner. You can save the image to Photos, to Files, or delete it. Update November 11th, 2019, 9:32AM ET: This article was updated to add a couple of tips for Windows 10 and the iPhone. Vox Media has affiliate partnerships. These do not influence editorial content, though Vox Media may earn commissions for products purchased via affiliate links. For more information, see our ethics policy.
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