In 2018, look for biometrics such as facial recognition, voice ID, and fingerprints to help make shopping far quicker —by eliminating the need to swipe a credit card at checkout, for instance. Instead, you will be able to verify your identity for a merchant scanning your eyes with your smartphone, in what’s known as a retinal payment. Fintech will likely also become greener in 2018. With cryptocurrencies reaching over $300 billion in total value, there is now a financial incentive for investments into quantum computing, which involves using the behavior of energy at a subatomic level to process computing functions at a billion times faster than today’s microprocessors.

http://fortune.com/2017/12/26/4-technology-trends-2018/