NaturePlus card:

The NaturePlus card at the London Natural History Museum allows visitors of the museum to continue their journey and experience at home. The Museum recognizes that the large amount of material on display is nearly impossible for a visitor to fully experience on a single day. By running a barcode found on the NaturePlus card across any interactive display in the museum, the visitor is able to bookmark the specific information, and access it later from the Natural History Museum website. The website also gives access to a community of other individuals and blogs that a visitor can continue to interact with after their visit.