Simplify the following text for a Grade 4 native English-speaking person.
Original: It can also be made so as to enforce one-way traffic of people , and in addition , it can restrict passage only to people who insert a coin , a ticket , a pass , or similar .
Simplified: It can also be made so as to make one-way traffic of people . It can also make passage only to people who put in a coin , a ticket , a pass , or similar .