In the SCA, there are various forms of registration:
Names, arms and badges of personas and branches can be registered with the SCA College of Heralds. While they may be rejected by the College if they are not appropriate to be used within the Society (according to the rules of the College), such registration does ensure that no other persona or branch uses similar names or symbols.
All SCA fighters must be registered as holding a suitable combat authorisation for the combat in which they are about to participate. While this may be demonstrated by showing an authorisation card, the lists officers at large tournaments often have to access a centralised registry.