The invention concerns a method for producing a nonwoven web formed at least partly with hydrophilic elementary fibers which consist in: producing by carding a textile layer which is then compressed and moistened; subjecting it to a bonding treatment using water jets acting at least against one of its surfaces; and transferring said bonded layer to a unit to be dewatered and dried. Storing subscriptions within persistent storage provides data security in the event of a service failure, at the cost of high latency in accessing subscription data. In another operation, one of the real-world objects is identified, the identified object is to be characterized into a virtual-world object.