Chapter 1 - Kaiana Theft Moment

Knowing how my players are, they will be very suspicious of someone being able to unlock a sophisticated fabrial lock without leaving a trace.

I have a few basic ideas to answer this like someone seeing the combination when Bordin wasn't paying attention and talking too loudly about it. But wondered if anyone else came up with something more creative for this moment? I can see it tying into Chapter 2 of my players asking for a skilled thief in the warcamps.