An E-ID is comparable to a regular identity document such as an ID card or a driving license. You can use an E-ID to prove your identity securely on the internet. For example, you can log in to government agencies' websites and do things like submit digital applications there.
The Tax Agency's ID card also contains an E-ID, which means that when you apply for an ID card you also get an E-ID. You use your E-ID with a pin code. The pin code will be sent by letter to your home address.
If you don't own a card reader or a computer with a card reader you can visit the service centre at Försäkringskassan, the Tax Agency or the Swedish Pensions Agency and borrow/use a computer.
Read more under BankID and ID cards in this glossary.