An electronic signature greatly simplifies the cooperation of participants in electronic interaction solving various business problems. Depending on the type, an electronic signature can be used for different purposes, for example, to guarantee the protection of an electronic document from changes after it is signed, to identify the person who signed the document (author), to identify a document signed with an electronic signature with a document on paper.
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This speeds up and simplifies the process of signing documents and takes less time and sometimes you don’t need to travel anywhere. I recommend https://crocodelab.com/mobile-development/ . This is an excellent IT company that has been developing for many years and I assure you that they do an excellent job and can help you with mobile development.