As many adoptees and birth families were curious about one another, various attempts were made to work around these provisions. Two common approaches were contributing to
passive registries and initiating
active searches.
Passive registry A passive registry or
adoption reunion registry is a
double-blind list, in which participants may opt to join. If Alice joins and specifies she is interested in meeting Bob, one of two things may happen. If Bob has already joined and indicated he wishes to meet Alice, contact between them is arranged. Otherwise, Alice simply waits on the list until Bob should decide to join. Many adoption reunion registries have been created since the 1950s, from those that are part of adoption search and support group membership services, to internet registries and state sponsored registries. The oldest and largest independent registry is ISRR - the International Soundex Reunion Registry, Inc. founded in 1975.
Active searches An active search is a conscious effort to find a birth family member or adoptee with whatever knowledge is available. == Types of disclosure ==