The invention presents a method of processing digital data originating from connected equipment, comprising the following steps: steps of acquisition, by each connected equipment (101), of local information, without transmission to a connected third party equipment, and the recording in a local memory of said information, the execution on the connected equipment (101), of an artificial intelligence computer program (102), firstly to process said information recorded by the computer of the connected equipment (101) only learning the habits of the owner of the connected equipment and on the other hand to produce measurements for each characteristic linked to the habits of said owner, a processing, by the computer of the connected equipment (101) only, for the generalization of said measurements, the encryption, preferably homomorphic, of the generalized measurements, and a method of negotiation between said equipment c connected (101) and said collection server (109) for an encrypted transmission of processed measurements excluding said unprocessed local measurements, communications between the collection server (109) and the connected equipment (101) taking place via an anonymous network (108), and a method of aggregating encrypted generalized measurements coming from different connected devices Figure of the abstract: FIG. 8
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