What is Fira and do I need to be a member to use UWB?

fira is the industry consortium that defines the UWB ranging specification and  certifies products for the purposes of interoperability. The name stands for "fine ranging".

There are various levels of fira membership as listed at the link below

membership levels

Ezurio (formerly Laird Connectivity) is an adopter member of fira.

fira membership is required to access specifications (fira intellectual property) and to certify end products.