In the age of the internet, it's probably unsurprising to hear iPhones are constantly tracking their users' locations. Many times it's because of an app like Yelp or Tinder, in which location scouting is necessary. But the iPhone itself is monitoring location too, though Apple doesn't advertise that. Fortunately, you can stop your iPhone from tracking your movement. Here's how to do it:

First, head to Settings. After scrolling down a bit, you'll find the Privacy button. Hit that and you'll see Location Services as the very first option.

It probably says "on" and you probably think you merely need to turn it off to disable movement tracking, but that's not enough. For one, Location Services isn't just relevant to your iPhone, but to all the apps that use location on your phone, as well. Even if you want to stop Apple from knowing where you are, you likely still want to use an app or two that uses your location — like Uber, for example.

So, moving forward, select Location Services and scroll to the very bottom where you'll find System Services. Near the end you'll see an option for Frequent Locations. Select this.

When the record-breaking Shinkansen high-speed rail line opened in 1964, it was perfect timing.
That year Tokyo hosted the Summer Olympics, and Japan hogged the spotlight to debut the world's first commercial bullet train.

In 2020, the Japanese capital will host the Summer Olympics, and if you're getting deja vu that's because the Asian nation is once again shattering rail records.

The new Japanese maglev became the fastest train in the world after traveling at 374 miles per hour (603 kilometers per hour) on a test run near Mount Fuji last year, breaking its own world record of 366 miles per hour (590 km per hour), set the previous week.

Maglev trains -- already operating at slower speeds in Shanghai and Changsha, in China, and Incheon, in South Korea -- use magnetic repulsion both to levitate the train up from the ground, which reduces friction, and to propel it forward. It is perhaps Japan's boldest rail innovation yet.

The Chuo Shinkansen maglev line will link Tokyo to the southern city of Nagoya in 40 minutes -- arguably making the maglev faster than flying, given the time it takes to get through an airport. There are plans to later extend the line to Osaka.

The 16-carriage train will be able to shuttle 1,000 passengers along the 159 mile (256 km) track.
Tomoaki Seki, a manager at the Central Japan Railway Company, which is developing the maglev line, says the company has been testing the technology since 1997. By the time it opens in 2027, the service will have undergone 30 years of refinement.

During a test run, in 1997, it had already reached a speed of 342 miles per hour (550 kilometers per hour), but the company says it needed to do more testing to bring the technology to the necessary safety standards, and make it a cost efficient service.

"We are refining our technology and verifying ways to reduce costs in operation, maintenance and construction," says Seki.
"There are people who wanted to have the maglev service as early as possible, but the construction takes time."

So, how does the 2020 Olympics rail breakthrough compare to the bullet train unveiled for the 1964 Tokyo games?
For a start, they're both somewhat political moves.
Japan's first high-speed railway between Tokyo and Osaka wasn't built solely for the sake of improving internal transport.

It was also an opportunity to show the world that Japan could outperform Western countries in engineering, after the economic devastation it suffered following the end of World War II.
Sure enough, the world took notice.

France swiftly followed in Japan's footsteps installing the Train à Grande Vitesse (TGV) in the 1970s, which set speed records in 2007. The Intercity-Express, which began service in Germany in 1985, still operates between major cities in the country; its trains are among the fastest high-speed trains in the world.

For Japan today, the need to revive its pioneering rail reputation is crucial. With a world record to its name, the maglev -- although not operational until 2027 -- heralds a new era in Japanese engineering.