It didn’t take long for a curious toddler to figure out how to unclasp the seat belt buckle that held her car seat in place.

And it didn’t take long for that toddler’s mother to figure out a way to keep that from ever happening again.

With the help of Clearwater manufacturer American Plastic, Patricia Mandarino of Spring Hill has created Angel Guard, a small squarish plastic widget that covers belt latches and makes them impossible to unbuckle.

She also started her own company, Future 1st, to sell her product. The device went on sale Thursday, just in time for “Child Passenger Safety Week,” which runs from Feb. 11-17.

Read Mandarino’s complete story on St. Petersburg Times