We need to access the laptop

Well, well! We all know Santa Claus, and his important job of delivering gifts from house to house on the night of December 24th.
But what no one imagined is that he is a normal and ordinary person during the rest of the year, and much less he is your boss! We still do not know where he is, but time is pressing. It looks like Christmas is in danger. There are only a few hours left by the early morning of the 24th!

Still full of disbelief, you find a post it next to some reins. What is it for?