Like you say, there is little a spot check could easily and quickly find. Therefor, IMHO there must be another reason. So, what if they are not looking for anything? What if its just to put people under pressure in the hope of having the "suspect" give away signs of guilt? That would be my rational.
Oh, another thing, checking to see that it is actually a laptop and not a banned fruit.
Like you say, there is little a spot check could easily and quickly find. Therefor, IMHO there must be another reason. So, what if they are not looking for anything? What if its just to put people under pressure in the hope of having the "suspect" give away signs of guilt? That would be my rational.
Oh, another thing, checking to see that it is actually a laptop and not a banned fruit.