This study was conducted from October 2002 through July 2003 as a process and impact evaluation of iris recognition technology named T-PASS (Teacher-Parent Authorization Security System) used in three New Egypt schools in New Jersey. The research team observed the use of the iris scanners, both informally (Dataset 1) and formally (Dataset 2), using systematic social observation methods, collected "official" data on school visitation patterns (Dataset 3), and administered surveys to parents and teachers (Datasets 4-7). The various data collection methods were intended to shed light on two key issues: what was the experience of the schools in implementing iris recognition technology, and what was the overall impact of the technology. Specific variables included in the study are demographic variables on survey respondents (parents and teachers), perceptions of safety and problems in the schools and surrounding neighborhoods, and comparisons of the T-PASS system to alternative entry systems such as the buzzer and swipe card methods.