Complex sentence: Mail Isolation Control and Tracking (MICT) is a system used by the United States Postal Service (USPS) to take photographs of the exterior of every piece of paper mail that is processed in the United States.
Split into simpler sentences: Mail Isolation Control and Tracking (MICT) is an imaging system employed by the United States Postal Service (USPS) for mail sorting. The system takes photographs of the exterior of every piece of paper mail that is processed in the United States.