I was imagining something a little more straightforward. While docked, open a contacts menu similar to the black market (which would depend on local reputation?) and make a 'donation' of however many credits. This would shut off all scans by security for, what, a minute or two? Just enough to get out.
As for coming the other way, would open a secured/unmonitored comms line to the station within a certain distance to wire the funds over.