The European open banking ecosystem allows fintech companies to innovate and create targeted apps and products that go beyond traditional bank offerings. Regulatory safeguards and security are built into the ecosystem, with third-party providers needing to be accredited by registering with national financial authorities. The right of consumer consent means that consumers can remove or give consent at any time. Fintech applications must gain approval from banks before being released. Increasing consumer consent via authentication and authorization is crucial, with Strong Customer Authentication (SCA) requirements protecting consumers against fraud during the authentication process. Fintech companies need to follow best practices such as creating tiered access, explaining intentions clearly, and enabling time limitations to ensure customers fully agree to link their bank accounts in an application. Measuring consent workflows can provide insights into customer experience and help build trust with app users. The success rate of connecting a bank account to an app is important, as well as API response rates, consent exit points, and usage and activity rates, which can all impact customer satisfaction and loyalty.