Breakdown of Tack vare systemet kan han logga in när som helst.
han
he
kunna
to be able to, can
systemet
the system
tack vare
thanks to
Questions & Answers about Tack vare systemet kan han logga in när som helst.
How does när som helst mean 'anytime' here?
Adding the phrase som helst (which literally means something like 'as one pleases') after a question word turns it into a 'free-choice' word. So när (when) becomes när som helst (anytime or whenever).
Why does the sentence say kan han instead of han kan?
This is a classic example of the V2 (verb-second) rule. Because the sentence starts with the descriptive phrase Tack vare systemet (Thanks to the system), the verb kan must take the second position in the sentence structure, pushing the subject han after it.
Can I say 'tack till' instead of tack vare for 'thanks to'?
No, tack vare is a fixed Swedish expression used when you mean 'thanks to' or 'because of' in a positive way. Translating it word-for-word as 'tack till' sounds unnatural in Swedish.
Where does the stress fall when saying logga in?
Logga in is a phrasal verb. In Swedish, the stress in these verbs usually falls heavily on the short particle word rather than the main verb. You should put the spoken emphasis on in, not on logga.