What's more mathematically secure than passcodes? Emojis, apparently.

British digital banking software maker Intelligent Environments this week launched what it calls the "world's first emoji-only passcode[s]," and says they're more secure — and easier to remember — than traditional PIN codes. In other words, you might soon be able to log into your bank account using your favorite emojis.

You select four emoji characters from a bank of 44 and use that as your new PIN for online banking. Intelligent Environments said it developed the technology, which is now available in the company's Android banking app, in response to research showing that more than a quarter of Brits have forgotten their PINs in the past.

"The emoji passcode plays to humans' extraordinary ability to remember pictures, which is anchored in our evolutionary history," memory expert and inventor of the Mind Map technique Tony Buzan said in a statement. "We remember more information when it's in pictorial form, that's why the emoji passcode is better than traditional PINs."

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Besides being potentially easier to remember than a numerical PIN, the new emoji passwords are harder for hackers to crack. Intelligent Environments said emojis offer 480 times the amount of possible four-digit combos compared to traditional, numerical passcodes (3,498,308 for emoji passcodes vs. 7,290 for numerical PINs). Moreover, they can prevent hackers from identifying common and easily obtainable numerical passwords, like 1234, a person's birthdate, or wedding anniversary.

Intelligent Environments Manager Director David Webber said the company had "input from lots of millennials" when developing the new technology.

"What's clear is that the younger generation is communicating in new ways," he said. "Our research shows 64 percent of millennials regularly communicate only using emojis. So we decided to reinvent the passcode for a new generation by developing the world's first emoji security technology."

For a look at the new emoji passcode technology in action, check out the video below.