A computer-implemented method includes steps for identifying a plurality of similar users that are similar to a target user, and providing a notification to the target user, the notification comprising a suggested action for the target user. Specifically disclosed is a thermally shrinkable laminated film which is produced by stretching a three-layered laminated sheet along at least one axis so that the interlayer adhesion strength becomes 0. The plug defines an elastomeric flow path within said plug.