The rules actually imply (in the chart above the text) that if you know at least one aspect of the icon you're looking for (like type or physical location) you can skip the random step.
Following on this, how well can you tell the icons apart? I mean if I am wearing shock gloves and wielding a smartgun, the two icons are fairly close to one another. Would the decker qualify for being able to skip the random choice part or would the two icons be too close to guess and have to make a random guess between the two as to which icon to go for if he wanted the smartgun?
I have this crazy notion of messing with a decker by installing a second and third RFID tagging into a smartgun, with a minichip running a simple routine. Each one shows the basic profile for the weapon, and the two dummys even show a mock ammo count, a mini sensor reading the shock of firing and deducts the count accordingly and 'reloads' when the count hits 0.
The two dummies are basically built into the body of the gun (and may even count toward my Redundant process manufacturing since it's extra garbage
), but do not connect to any parts that would affect performance if they get bricked and a small mini switch on the side to flip either or both to silent mode. This creates a trio of hidden icon signals, relatively the same location, reading as a weapon if discovered, but if the decker does not look at the other two icons and just tries to brick the gun right off, there is a 66% chance he is just bricking the dummy, leaving the gun live.
And even then if they realize something is amiss its still 50/50 of getting the right icon.