Leo looked out the window. The rain was heavy, but he could see something—or someone—standing exactly where the 'X' was. They were holding a laptop.
He opened it. It was a high-resolution satellite image of his house. In the center of his backyard, there was a red 'X'. Download 420K zip
He realized then that the 420KB wasn't the data—it was the key. He hadn't just downloaded a file; he had opened a door, and whatever was on the other side had just finished moving in. Leo looked out the window