Grade school students in the Brazilian city, Vitoria da Conquista’s are using school uniforms embedded with RFID chips to alert parents if they’re not attending class, according to The Huffington Post.

Th uniforms monitor children as they enter school premises, relaying information to a central computer, which sends out automated text messages to parents’ cell phones. Parents are notified if their child doesn’t show up 20 minutes after classes begin.

More than 20,000 students in city’s 213 public schools are currently using the t-shirts equipped with RFID chips. By 2013, all of the city’s 43,000 public school students, aged 4 to 14, will be using the chip-embedded t-shirts.

After a student skips classes three times parents will be asked to explain the absences. If they fail to do so, the school may notify authorities.

Read the full story here.