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Slide to unlock – an iconic gesture that, despite its absence in iOS 10 and later versions of the system are still inherent to the iPhone and other products from Applu. It looks simple at first glance, but behind its perfect functioning lies a lot of hard work on several fronts. What all had to happen for us to be able to "swipe to unlock"? Let's tell the whole story of the creation of the legendary gesture.

One of the key decisions Apple The Human Interface team's design philosophy for the iPhone was to boil everything down to big, simple gestures. There's a bit of irony in that—after investing so heavily in multi-touch technology, which relies on a variety of touch inputs, one of the key edicts was Applu perform as many gestures as possible with a single finger.

Former user interface designer Applu Bas Ording said that the request came directly from Steve Jobs. Fulfilling it was not easy. You simply cannot perform many gestures with one finger – it is easy to scroll the screen with one finger, but for zoom gestures, one finger is not enough.

“We worked incredibly hard on multi-touch, but then we tried our best to do everything with one finger,” Ording recalls with a laugh.

Ording is one of the lesser-known employmentance Applu, whose work has had an enormous impact on our digital lives. He is responsible for a large number of today's computing interfaces. During the 15 years he spent in Applu, managed to become one of the leading designers iOS and macOS / OS X interfaces that we work with every day. The results of his work include specific scrolling on the iPhone, the zoom effect in Docku on the Mac and much more. Ording is also behind hundreds of patents and has been a key witness in lawsuits Apple vs. Samsung, however, did not give too many interviews to journalists.

The iPhone's built-in proximity sensor turned off the screen when the user raised the device to their face. The user interface team initially thought that this sensor would be enough to turn off the device's display when the user had it in their pocket, for example. However, they soon discovered that simply turning off the display nestThis is because even in a pocket or bag, for example, unwanted dialing of numbers or other unwanted actions may occur.

The ability to lock the screen seemed like a good and logical step. But in addition to locking, a distinctive, simple gesture was needed to unlock the device. And that led to the invention of the Slide to unlock function. However, the path to it was not easy. The team in question tried a number of gestures, such as sliding with two fingers, pressing two different places at the same time, or even an unlocking gesture. Steve Jobs sononec decided that unlocking should be achieved with a single swipe of the finger across the screen. This required a generous, long swipe. It also needed to be horizontal, as a vertical orientation could increase the risk of accidental unlocking when pulling the phone out of a pocket.

The mechanism included a button that could be slid from left to right and the text "Slide to Unlock". To emphasize the need for swiping, the team decided to add an animation to the screen to indicate to the user which direction to move the button. The option of arrows was quickly rejected by the team due to possible lack of transparency. Ordinga thought of highlighting the text with animation. The resulting effect was simple, elegant and fun.

Applu was to this effect granted in 2011 patent. But the function also became a key point of conflict between Applewith Samsung. With the arrival of iOS 10 in 2016 Apple "Swipe to unlock" gestures got rid of. He "took charge" of unlocking home button with integrated Touch ID, or it was possible to unlock the phone using a numeric code.

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Source: CultOfMac

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