At home or away? Worth what exactly? Property or life? Before anyone spends money on protection, they need to determine what's going to be protected IMO. A house may be castle, but it's seldom invincible to defeat. Marketing tactics and products prey upon weaknesses like the darkness strikes fear in man. "Film" sounds kinda flimsy to me....money spent better elsewhere in my opinion. Even the top of the line alarm/monitoring system won't save you or your stuff. What makes you think a window film will make a difference? Why break a window when you could pull it out of the frame? Don't feed the rats.