KEY POINTS
  • Tech firms from Stripe to GoCardless are all trying to grab a slice of the same $1.9 trillion industry.
  • Upstart payment firms have attracted big corporate clients and billions of dollars in venture capital money.
  • Last year saw Adyen go public and iZettle get bought by PayPal, fueling speculation over the next big exit.
Stripe co-founder and CEO Patrick Collison delivers his keynote conference during day three of the Mobile World Congress in Barcelona on February 24, 2016.

Technology firms from Silicon Valley's Stripe to U.K.-based GoCardless are all trying to grab a slice of the same $1.9 trillion industry.

Payments, a sector long dominated by cash, has gone digital as a number of start-ups enter the fray looking to make it easier to pay for things online as well as in stores.