The global out of band authentication market was valued at $443.81 million in 2019, and it is expected to reach a value of $846.80 million by 2025, registering a CAGR of 11.37% over the forecast period 2020 ‘ 2025. North America expected to hold a prominent share in the OOBA market owing to the increase in the number of IoT and connected devices and vulnerabilities associated with them are some of the factors driving the adoption of OBA solutions and services.
Source: https://www.helpnetsecurity.com/2021/01/29/out-of-band-authentication-market/