The new language covers both types of cryptocurrency mining, active and passive, while ensuring Apple users aren't experiencing any performance drain from either. As per the new guidelines, the company will also restrict the apps that drain battery, put unwanted strain on devices and generate excessive amount of heat.
Apple also has an existing section addressing cryptocurrency apps on its App Store that's been in place since about 2014.
In March 2018, 9to5Macreported that Apple pulled a calendar app from its App Store for violating the efficient power guidelines. While this particular adjustment may not seem to be a developer-friendly move at first glance because of its restrictive nature, it will actually be a boon for devs who create apps that offer cryptocurrency transactions.
"Apps, including any third party advertisements displayed within them, may not run unrelated background processes such as cryptocurrency mining", said the guidelines.
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Apps facilitating Initial Coin Offerings (ICOs) must come from "established banks, securities firms, futures commission merchants ('FCM'), or other approved financial institutions".
Not that anyone would seriously use an iPhone to mine cryptocurrencies.
The new Apple Books app launches this fall, with the Book Store available in 51 countries, and free books available in 155 countries.
The company has listed the complete guidelines on the section of cryptocurrency. Exchanges can offer fully-featured apps offering trading abilities, as long as the apps are issued by the exchanges themselves and not third parties.
And apps may not offer cryptocurrency as an incentive for taking specific actions, such as downloading other apps, posting to social media or urging others to download apps.