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Continue to ChatSchools turn to high-tech systems to check on visitors https://www.radioiowa.com/2013/08/07/schools-turn-to-high-tech-systems-to-check-on-visitors/
Schools turn to high-tech systems to check on visitors https://www.radioiowa.com/2013/08/07/schools-turn-to-high-tech-systems-to-check-on-visitors/