A non-transitory computer-readable storage medium encoding computer executable instructions that, when executed by at least one processor, performs a method for performing unification of data for identifying a user on at least one computing device after reinstalling at least one application on the at least one computing device confirming to General Data Protection Regulation (GDPR) compliance, the method comprising:
- receiving, at a computing device, a first set of data associated with the at least one computing device, wherein the computing device is associated with the user, wherein the first set of data is unique identification information of the computing device associated with the user;
- mapping, at the computing device, the first set of data to a first natural number of a plurality of natural numbers using an increment sequence method, wherein the increment sequence method enables generation of natural number of the plurality of natural numbers in an incremented way in a number sequence;
- hashing, at the computing device, the first set of data in real-time, wherein the user identification system performs the hashing of the first set of data using a hash function, wherein the user identification system performs hashing of the first set of data for enhancing security of the first set of data;
- assigning, at the computing device, a first shard index of a plurality of shard indexes to the first set of data based on the first natural number of the plurality of natural numbers, wherein the first shard index of the plurality of shard indexes facilitates storing of the first set of data in corresponding shard of the plurality of shards based on shard indexing process, wherein the first shard index of the plurality of shard indexes is assigned upon installation of the application for first time in the computing device associated with the user, wherein the shard indexing process utilizes a shard modular operation, wherein the shard modular operation is based on number of the plurality of shards and number of the plurality of natural numbers;
- sending, at the computing device, the first shard index of the plurality of shard indexes to a serverupon a request from the server, wherein the sending of the first shard index of the plurality of shard indexes adheres to the GDPR compliance standard;
- obtaining, at the computing device, a second set of data associated with the at least one computing device of the user, wherein the computing device is associated with the user;
- mapping, at the computing device, a second set of data to a second natural number of the plurality of natural numbers, wherein the mapping is performed based on information of the first shard index of the plurality of shard indexes, wherein the mapping is performed after reinstalling of the application in the computing device, wherein the mapping is performed upon detection that hash of the second set of data equals hash of the first set of data and the hash of the first set of data is already stored at the server;
- unifying, at the computing device, the first natural number and the second natural number for identifying and associating the first shard index of the plurality of shard indexes for the user after reinstalling of the application in the computing device;
- and
- assigning, at the computing device, the first shard index of the plurality of shard indexes to the second set of data associated with the user, wherein the first shard index of the plurality of shard indexes facilitates storing of data of the user in same shard of the plurality of shard indexes based on shard indexing process.