We are interested in designing technology to help detect, record, and track important developmental milestones that occur in children during their first 5 years of life. By tracking these milestones, we can help parents and healthcare providers detect developmental delays, such as autism or deafness, earlier, which can improve the effects of interventions. We have created design guidelines for developing technology to support new parents in record-keeping and implemented novel technologies to support better record-keeping and decision-making about developmental progress. We have also designed and evaluated two systems, called Baby Steps and KidCam, which were aimed at meeting the record-keeping needs of new parents. We are currently in the process of developing a web portal with subsequent text messaging, Twitter, and Facebook links to help make tracking more interesting and motivating.