That's just self checkout. Some places, like Ica, have self scanning which works so much better. You just scan the bar code as you pick things up - which is just in one motion as you put things in your bag. No need to unpack as you pay.
Yes you do need to be a member to use the system, but that's a very small price to pay for the convenience and speed of avoiding all lines and stress of the regular checkout.
Sweden is a big country so I could definitely be wrong about how things look across it. However, in the greater Gothenburg area every Ica I've visited has it - that includes everything from big ones in the city and shopping malls to small ones in the suburbs 30km outside the city (where I live).
Yes you do need to be a member to use the system, but that's a very small price to pay for the convenience and speed of avoiding all lines and stress of the regular checkout.