Designed to help streamline visitor policies at Harford County schools, a new system approved this month that scans driver's licenses and prints temporary photo identification badges would also check visitors' names against a list of convicted sex offenders. The plan to purchase the system follows a trend of schools across the country that are tightening visitor policies. Harford became the first school district in the Baltimore area to require such screening for visitors when it approved the $300,000 plan at an April 3 school board meeting.

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