The implementation of public health measures in response to the COVID-19 pandemic has impacted heavily on the operation of child justice systems and places of detention, creating new challenges in the safeguarding and implementation of children's rights. Yet, it has also been a time of innovation, particularly in the use of technology. Using case studies from Ireland and Aotearoa New Zealand, we discuss how technology has been used to maintain the balance between restrictive yet necessary public health measures and the operation of the child justice system. Examples include remote participation in remand hearings and trial and the use of "virtual visits" for children in detention.