In context: Tackers such as Apple's AirTags are becoming an increasingly popular way of keeping track of items such as car keys, but while they might discourage thefts, they've also made it a lot easier for people to follow someone without them realizing. Tile's new Anti-Theft Mode makes the trackers more difficult to discover, which is potentially bad news for thieves but good news for stalkers. However, Tile is threatening anyone who engages in the latter with a $1 million fine.