When you create your account and start your identity registration, Digidentity will need to make sure you are actually who you say you are.
For this reason, the GOV.UK Verify program has a very robust set of requirements which determine the level of assurance of your account. Simply put, the level of assurance of your account is a measure of how certain Digidentity is about the claimed identity.
Different government services may require differing levels of assurance in order to allow access to information available online. For example, the level of assurance required when updating existing details is not as high as the level you would need when registering for a tax service or universal credits.
If you would like to learn more about the process identity providers use, and the requirements attached to actually being an identity provider, you may wish to read the official Government Digital Services blog about the subject. Click the link below for further information.