What is the difference between the A1 and A3 certificates?

Both have the same legal value. What changes is how they are stored and their validity period. The A1 is kept in a file, on the computer or in the cloud, and is usually valid for 1 year. The A3 is kept on a card or USB drive (token) and can be valid for 1 to 3 years. The A1 is practical for companies with an accountant. The A3 is good for those who want more physical control. TF Assessor helps you choose the best option for your case.

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